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American Association for Anatomy recommendations for the management of legacy anatomical collections Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-18 Jon Cornwall, Thomas H. Champney, Carlina de la Cova, Dominic Hall, Sabine Hildebrandt, Jason C. Mussell, Andreas Winkelmann, Valerie B. DeLeon
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A pan‐cheloniid turtle from the Middle Miocene of Portugal Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-14 Adán Pérez‐García, Miguel Telles Antunes
Currently, there is no information on the fossil record of Pan‐Cheloniidae from the Neogene of the Iberian Peninsula. A well‐preserved partial skeleton attributable to this lineage of turtles, from the Middle Miocene of Portugal, is presented here. It preserves much of the anterior half of its carapace, in which the plates remain articulated, as well as several articulated dorsal vertebrae, and an
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Tarsals from the Sima de los Huesos Middle Pleistocene site (Atapuerca, Burgos, Spain) Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-13 Adrián Pablos, Juan Luis Arsuaga
Here, we provide a complete, updated, and illustrated inventory, as well as a comprehensive study, of the tarsals (rearfoot) recovered from the Middle Pleistocene site of Sima de los Huesos (SH, Atapuerca, Spain) in comparison to other Homo comparative samples, both extant and fossil. The minimum number of individuals (MNI) estimated from the tarsals has been established as 15, which represents 51
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The lion of The Anatomical Record: The indomitable John Ladman Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-12 Jeffrey T. Laitman, Heather F. Smith
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Artificial neural networks reconstruct missing perikymata in worn teeth Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-12 Mario Modesto‐Mata, Luis de la Fuente Valentín, Leslea J. Hlusko, Marina Martínez de Pinillos, Ian Towle, Cecilia García‐Campos, María Martinón‐Torres, José María Bermúdez de Castro
Dental evolutionary studies in hominins are key to understanding how our ancestors and close fossil relatives grew from the early stages of embryogenesis into adults. In a sense, teeth are like an airplane's ‘black box’ as they record important variables for assessing developmental timing, enabling comparisons within and between populations, species, and genera. The ability to discern this type of
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Vascular microforamina and endocranial surface: Normal variation and distribution in adult humans Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-11 Emiliano Bruner, Stanislava Eisová
The term craniovascular traits refers to the imprints left by arteries and veins on the skull bones. These features can be used in biological anthropology and archaeology to investigate the morphology of the vascular network in extinct species and past populations. Generally, the term refers to macrovascular features of the endocranial cavity, like those associated with the middle meningeal artery
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Dental caries in living and extinct strepsirrhines with insights into diet Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-11 Keegan R. Selig, Sergi López‐Torres, Anne M. Burrows, Mary T. Silcox, Jin Meng
Dental caries is one of the most common diseases afflicting modern humans and occurs in both living and extinct non‐human primates, as well as other mammalian species. Compared to other primates, less is known about the etiology or frequency of caries among the Strepsirrhini. Given the link between caries and diet, caries frequency may be informative about the dietary ecology of a given animal. Understanding
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Regional differences in the umbilical vein and ductus venosus at different stages of normal human development Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-09 Naoko Isotani, Toru Kanahashi, Hirohiko Imai, Akio Yoneyama, Shigehito Yamada, Tetsuya Takakuwa
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The Cranium I: Neurocranium Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-08 Ana Pantoja‐Pérez, Juan‐Luis Arsuaga
The Sima de los Huesos (SH) site has provided a significant collection of hominin remains, including numerous cranial fragments, which have contributed to our understanding of the MP human population. The taxonomic classification of the SH hominins remains a topic of debate, with some studies suggesting a close relationship to Neandertals based on nuclear DNA analysis. The cranial morphology of the
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The Sima de los Huesos thorax and lumbar spine: Selected traits and state‐of‐the‐art Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-07 Asier Gómez‐Olivencia, Juan Luis Arsuaga
Information on the evolution of the thorax and lumbar spine in the genus Homo is hampered by a limited fossil record due to the inherent fragility of vertebrae and ribs. Neandertals show significant metric and morphological differences in these two anatomical regions, when compared to Homo sapiens. Thus, the important fossil record from the Middle Pleistocene site of Sima de los Huesos (SH) not only
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A new Crocodyloidea from the middle Eocene of Zamora (Duero Basin, Spain) Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-06 Iván Narváez, Ane de Celis, Fernando Escaso, Santiago Martín de Jesús, Adán Pérez‐García, Francisco Ortega
The eusuchian crocodyliforms recorded in the Eocene levels of the Spanish Duero Basin belong to three lineages: Planocraniidae, with the species Duerosuchus piscator; Alligatoroidea, represented by several specimens of the genus Diplocynodon; and Crocodyloidea, which includes several specimens traditionally attributed to Asiatosuchus. The genus Asiatosuchus, established in 1940 based on a middle Eocene
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The origin and evolution of Cynodontia (Synapsida, Therapsida): Reassessment of the phylogeny and systematics of the earliest members of this clade using 3D-imaging technologies Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-05 Luisa C. Pusch, Christian F. Kammerer, Jörg Fröbisch
The origin of cynodonts, the group ancestral to and including mammals, is one of the major outstanding problems in therapsid evolution. One of the most troubling aspects of the cynodont fossil record is the lengthy Permian ghost lineage between the latest possible divergence from its sister group Therocephalia and the first appearance of definitive cynodonts in the late Permian. The absence of cynodonts
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Cranial and postcranial anatomy of a juvenile baurusuchid (Notosuchia, Crocodylomorpha) and the taxonomical implications of ontogeny Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-03-02 Daniel Martins dos Santos, Joyce Celerino de Carvalho, Carlos Eduardo Maia de Oliveira, Marco Brandalise de Andrade, Rodrigo Miloni Santucci
Baurusuchidae comprises a clade of top‐tier terrestrial predators and are among the most abundant crocodyliforms found in the Adamantina Formation, Bauru Basin, Brazil (Campanian‐Maastrichtian). Here, we provide a detailed description of the cranial and postcranial osteology and myology of the most complete juvenile baurusuchid found to date. Although the preservation of juvenile individuals is somewhat
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Skull osteology, neuroanatomy, and jaw‐related myology of the pig‐nosed turtle Carettochelys insculpta (Cryptodira, Trionychia) Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-29 Yann Rollot, Serjoscha W. Evers, Gabriel S. Ferreira, Léa C. Girard, Ingmar Werneburg, Walter G. Joyce
The osteology, neuroanatomy, and musculature are known for most primary clades of turtles (i.e., “families”), but knowledge is still lacking for one particular clade, the Carettochelyidae. Carettochelyids are represented by only one living taxon, the pig‐nosed turtle Carettochelys insculpta. Here, we use micro‐computed tomography of osteological and contrast‐enhanced stained specimens to describe the
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Dosage‐dependent effects of FGFR2W290R mutation on craniofacial shape and cellular dynamics of the basicranial synchondroses Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-27 Heather A. Richbourg, Marta Vidal‐García, Katherine A. Brakora, Jay Devine, Risa Takenaka, Nathan M. Young, Siew‐Ging Gong, Amanda Neves, Benedikt Hallgrímsson, Ralph S. Marcucio
Craniosynostosis is a common yet complex birth defect, characterized by premature fusion of the cranial sutures that can be syndromic or nonsyndromic. With over 180 syndromic associations, reaching genetic diagnoses and understanding variations in underlying cellular mechanisms remains a challenge. Variants of FGFR2 are highly associated with craniosynostosis and warrant further investigation. Using
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The impact of measurement technique and sampling on estimates of skeletal muscle fibre architecture Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-26 Andrea B. Taylor, Claire E. Terhune, Callum F. Ross, Christopher J. Vinyard
Skeletal muscle fibre architecture provides important insights into performance of vertebrate locomotor and feeding behaviours. Chemical digestion and in situ sectioning of muscle bellies along their lengths to expose fibres, fibre orientation and intramuscular tendon, are two classical methods for estimating architectural variables such as fibre length (Lf) and physiological cross‐sectional area (PCSA)
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Pterion variation in the skulls of rhesus macaques from Cayo Santiago: Inheritance, development, and pathology Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-23 George Francis, Qian Wang
The pterion is the sutural juncture of the frontal, parietal, sphenoidal, temporal, and zygomatic bones on the lateral aspect of the cranium. As a craniometric landmark, the pterion has a taxonomic valence, in addition to a common neurosurgical entry point in medicine. Variation in the articulation patterns at the pterion have been documented between primate species yet have a high degree of uniformity
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Comparative analysis of osteoderms across the lizard body Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-24 Anastasiia Maliuk, Arsalan Marghoub, Catherine J. A. Williams, Edward Stanley, Loïc Kéver, Matthew Vickaryous, Anthony Herrel, Susan E. Evans, Mehran Moazen
Osteoderms (ODs) are mineralized tissue embedded within the skin and are particularly common in reptiles. They are generally thought to form a protective layer between the soft tissues of the animal and potential external threats, although other functions have been proposed. The aim of this study was to characterize OD variation across the lizard body. Adults of three lizard species were chosen for
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Move over “Jurassic Park,” the “Triassic Circus” is thundering into town in a new Special Issue of The Anatomical Record Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-23 Jeffrey T. Laitman, Heather F. Smith
When we were kids (longer ago for some of us than others!), and visited our nearest natural history museum, the first items we all ran to see were the ever-toothy T-rex and the ponderous-looking brontosaurus (except for the three odd kids who went to see the tree exhibit and the one who stared at the butterfly room; they are probably Fortune500 Company CEOs now). And who among us did not have a collection
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Metatarsals and foot phalanges from the Sima de los Huesos Middle Pleistocene site (Atapuerca, Burgos, Spain) Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-21 Adrián Pablos, Juan Luis Arsuaga
This study provides a complete, updated and illustrated inventory, as well as a comprehensive study, of the metatarsals and foot phalanges (forefoot) recovered from the Middle Pleistocene site of Sima de los Huesos (SH, Atapuerca, Spain) in comparison to other Homo comparative samples, both extant and fossils. This current updated review has established a minimum number of individuals (MNI) of 17,
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Mirror, mirror? An evaluation of identical twin mirroring in tooth crown morphology Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-19 Tess McCrary, Toby Hughes, Alan H. Brook, Kathleen S. Paul
It has been estimated that 25% of monozygotic (“identical”) twin pairs exhibit reverse asymmetry (RA) or “mirroring” of minor anatomical features as a result of delayed zygote division. Here, we examine whether identical twin mirroring accounts for patterns of dental asymmetry in a sample of monozygotic and dizygotic (“fraternal”) twins. We focus on crown morphology to approach the following question:
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Evolutionary anatomical and functional characteristics of the intrinsic shoulder and brachial muscles in the northern anteater (Tamandua mexicana) Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-15 Sharith Valentina Torres Suárez, Maria Jose Monroy-Cendales, Juan Velasco-Bolaños, Maria Angelica Miglino, Juan Fernando Vélez García
Tamandua mexicana is an anteater species native from Mexico to Peru. This species is of great evolutionary interest because it belongs to one of the oldest clades of placental mammals in the American continent. This study aimed to describe the origin, insertion, and arterial supply of the intrinsic shoulder and brachial muscles of T. mexicana. We also compared the masses of the functional groups. Gross
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Comparing lateral plantar process trabecular structure to other regions of the human calcaneus Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-15 Manisha C. Koneru, Christine M. Harper
Investigating skeletal adaptations to bipedalism informs our understanding of form–function relationships. The calcaneus is an important skeletal element to study because it is a weight-bearing bone with a critical locomotor role. Although other calcaneal regions have been well studied, we lack a clear understanding of the functional role of the lateral plantar process (LPP). The LPP is a bony protuberance
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The dawn of an Era: New contributions on comparative and functional anatomy of Triassic tetrapods Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-12 Felipe L. Pinheiro, Flávio A. Pretto, Leonardo Kerber
The Triassic period stands as a crucial moment for understanding tetrapod evolution, marking the emergence and early diversification of numerous lineages that persist in today's ecosystems. Birds, crocodiles, testudines, lizards, and mammals can all trace their origins to the Triassic, which is distinguished by several adaptive radiation events that fostered unparalleled diversity in body plans and
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Reassessment of the enigmatic “Prestosuchus” loricatus (Archosauria: Pseudosuchia) from the Middle-Late Triassic of southern Brazil Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-12 Julia B. Desojo, Oliver W. M. Rauhut
Our knowledge of the diversity and evolution of South American Triassic pseudosuchians has greatly improved in the past 15 years, due to new discoveries, but also to the revision of several historically important specimens. One of the earliest descriptions of pseudosuchians from the Triassic of Brazil stems from the classic work of Huene from the first half of the 20th century, who described several
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On the spinal venous sinus of Alligator mississippiensis Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-07 Seth Parker, Michael Cramberg, Anchal Scott, Stephanie Sopko, Annelise Swords, Ethan Taylor, Bruce A. Young
The epidural space of the American alligator (Alligator mississippiensis) is largely filled by a continuous venous sinus. This venous sinus extends throughout the trunk and tail of the alligator, and is continuous with the dural sinuses surrounding the brain. Segmental spinal veins (sl) link the spinal venous sinus (vs) to the somatic and visceral venous drainage. Some of these sl, like the caudal
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Morphofunctional analysis of the gastrointestinal tract of an annual killifish: In search of structural traits related to the annual life history Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-07 Omar Domínguez-Castanedo, Ximena Luna-González, Sharon Valdez-Carbajal, Tessy M. Muñoz-Campos
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Microarchitecture of the penis bone (baculum) of a seal: A 3D morphometric examination using synchrotron and laboratory micro-computed tomography Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-04 Shreya S. Hande, Janna M. Andronowski, Edward H. Miller
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Correction to “An updated synthesis of and outstanding questions in the olfactory and vomeronasal systems in bats: Genetics asks questions only anatomy can answer” Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-01
Yohe, L. R., & Krell, N. T. (2023). An updated synthesis of and outstanding questions in the olfactory and vomeronasal systems in bats: Genetics asks questions only anatomy can answer. The Anatomical Record, 306(11), 2765–2780. https://doi.org/10.1002/ar.25290 In the originally published article, the caption of Figure 3 contained incorrect references. They should not be references but are instead numbers
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The tympanoperiotic complex of the blue whale, Balaenoptera musculus Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-31 Michelangelo Bisconti, Mark Bosselaers, Camille Locatelli, Giorgio Carnevale, Olivier Lambert
The tympanoperiotic complex of a blue whale Balaenoptera musculus is described and compared to the homologous structures in the other extant and fossil baleen whale species. The periotic and the tympanic bulla represent informative anatomical regions in both functional and phylogenetic studies and for this reason a micro-CT scan of the bones was performed in order to better characterize their external
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Postcranial anatomy of Prestosuchus chiniquensis (Archosauria: Loricata) from the Triassic of Brazil Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-02-01 Bianca Martins Mastrantonio, Marcel Baêta Lacerda, Brodsky Dantas Macedo de Farias, Flávio Augusto Pretto, Letícia de Oliveira Rezende, Julia Brenda Desojo, Cesar Leandro Schultz
Prestosuchus chiniquensis is the best represented pseudosuchian archosaur from the Pinheiros-Chiniquá Sequence, Middle-Late Triassic (Ladinian/Carnian) of the Santa Maria Supersequence, Southern Brazil. Several incomplete specimens attributed to this species have been described, but the morphology of the postcranial skeleton of P. chiniquensis is poorly known. In this contribution we present the postcranial
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Distribution of alpha-synuclein in rat salivary glands Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-29 Tomiko Nishitani, Yoshihiro Mitoh, Takehiro Yajima, Daisuke Tachiya, Tomohiro Hoshika, Tomohiro Fukunaga, Yoshihiro Nishitani, Ryusuke Yoshida, Itaru Mizoguchi, Hiroyuki Ichikawa, Tadasu Sato
Expression of alpha-synuclein (Syn), a presynaptic neuronal protein, was immunohistochemically examined in intact rat submandibular, sublingual, and lingual glands. The submandibular gland contained abundant periductal Syn-immunoreactive (−ir) nerve fibers. Abundant Syn-ir varicosities were present in acini of the sublingual and serous lingual glands. By confocal laser scanning microscopy, Syn-ir nerve
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A new early-diverging probainognathian cynodont and a revision of the occurrence of cf. Aleodon from the Chañares Formation, northwestern Argentina: New clues on the faunistic composition of the latest Middle–?earliest Late Triassic Tarjadia Assemblage Zone Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-29 Agustín G. Martinelli, Martín D. Ezcurra, Lucas E. Fiorelli, Juan Escobar, E. Martín Hechenleitner, M. Belén von Baczko, Jeremías R. A. Taborda, Julia B. Desojo
The Chañares Formation (Ischigualasto-Villa Unión Basin) is worldwide known by its exquisitely preserved fossil record of latest Middle-to-early Late Triassic tetrapods, including erpetosuchids, “rauisuchians,” proterochampsids, gracilisuchids, dinosauromorphs, pterosauromorphs, kannemeyeriiform dicynodonts, and traversodontid, chiniquodontid and probainognathid cynodonts, coming from the Tarjadia
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Skull anatomy and paleoneurology of a new traversodontid from the Middle-Late Triassic of Brazil Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-29 Leonardo Kerber, Lívia Roese-Miron, Thais G. M. Medina, Lúcio da Roberto-da-Silva, Sérgio F. Cabreira, Flávio A. Pretto
Traversodontidae, a clade of gomphodont cynodonts, thrived during the Middle and Late Triassic, displaying a wide geographical distribution. During fieldwork in 2009, a new specimen was discovered in Ladinian/early Carnian stratigraphic layers in southern Brazil. Here, we describe this specimen and propose a new taxon closely related to Traversodon stahleckeri (Traversodontinae) but displaying a unique
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Evolution of postcanine complexity in Gomphodontia (Therapsida: Cynodontia) Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-28 Christophe Hendrickx, Fernando Abdala, Florencia S. Filippini, Simon Wills, Roger Benson, Jonah N. Choiniere
Gomphodonts form a Triassic radiation of small to medium-bodied (<0.5–2.5 m in length) quadrupedal cynodonts characterized by labiolingually expanded gomphodont postcanines. They were the dominant cynodont group in Middle and Late Triassic ecosystems from the Southern Hemisphere and the first predominantly herbivorous cynodonts to evolve. Gomphodonts were also the first therapsids to develop hypsodonty
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Distribution of vasoactive intestinal peptide (VIP) immunoreactivity in the rat pallial and subpallial amygdala and colocalization with γ-aminobutyric acid (GABA) Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-23 G. Salamanca, C. Tagliavia, A. Grandis, J. M. Graïc, B. Cozzi, C. Bombardi
The amygdaloid complex, also known as the amygdala, is a heterogeneous group of distinct nuclear and cortical pallial and subpallial structures. The amygdala plays an important role in several complex functions including emotional behavior and learning. The expression of calcium-binding proteins and peptides in GABAergic neurons located in the pallial and subpallial amygdala is not uniform and is sometimes
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The redescription of Malerisaurus robinsonae (Archosauromorpha: Allokotosauria) from the Upper Triassic lower Maleri Formation, Pranhita-Godavari Basin, India Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-26 Saradee Sengupta, Martín D. Ezcurra, Saswati Bandyopadhyay
Allokotosauria, a clade of non-archosauriform archosauromorphs with a broad diversity of body plans, plays a crucial role in better understanding the evolutionary history of early diverging stem-archosaurs. Here we provide a detailed redescription of Malerisaurus robinsonae, a malerisaurine allokotosaur from the middle Carnian—lowermost Norian lower Maleri Formation, Pranhita-Godavari Basin, India
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Comments on the pelvic girdle anatomy of Lagerpeton chanarensis Romer, 1971 (Archosauria) and its implications on the posture and gait of early pterosauromorphs Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-23 Federico L. Agnolín, Fernando E. Novas, Martín D. Ezcurra, Santiago Miner, Rodrigo Temp Müller
Lagerpeton chanarensis is an early avemetatarsalian from the lower Carnian (lowermost Upper Triassic) levels of the Chañares Formation, La Rioja Province, Argentina. Lagerpeton and its kin were traditionally interpreted as dinosaur precursors of cursorial habits, with a bipedal posture and parasagittal gait. Some authors also speculated saltatorial capabilities for this genus. Recent analyses indicate
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Cranial osteology and paleoneurology of Tarjadia ruthae: An erpetosuchid pseudosuchian from the Triassic Chañares Formation (late Ladinian-?early Carnian) of Argentina Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-23 J. B. Desojo, M. B. von Baczko, M. D. Ezcurra, L. E. Fiorelli, A. G. Martinelli, P. Bona, M. J. Trotteyn, M. Lacerda
Tarjadia ruthae is a quadrupedal terrestrial pseudosuchian from the Middle-early Upper Triassic of the Chañares Formation, La Rioja Province, Argentina. Originally, this species was identified as an indeterminate archosaur and later as a doswelliid archosauriform based on very fragmentary specimens characterized by the ornamentation of the skull roof and osteoderms. Additional specimens (including
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The postcranial skeleton of Teyujagua paradoxa (Reptilia: Archosauromorpha) from the early Triassic of South America Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-23 Tiane M. De-Oliveira, João Lucas Da Silva, Leonardo Kerber, Felipe L. Pinheiro
Teyujagua paradoxa is a remarkable early archosauromorph from the Lower Triassic Sanga do Cabral Formation, Brazil. The species was originally described from an almost complete skull and a few associated cervical vertebrae, and no further postcranial elements were known at that time. Additional fieldwork in the Sanga do Cabral Formation, however, was successful in recovering a fairly complete postcranial
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The osteology of Shuvosaurus inexpectatus, a shuvosaurid pseudosuchian from the Upper Triassic Post Quarry, Dockum Group of Texas, USA Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-23 Sterling J. Nesbitt, Sankar Chatterjee
A vast array of pseudosuchian body plans evolved during the diversification of the group in the Triassic Period, but few can compare to the toothless, long-necked, and bipedal shuvosaurids. Members of this clade possess theropod-like character states mapped on top of more plesiomorphic pseudosuchian character states, complicating our understanding of the evolutionary history of the skeleton. One taxon
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Interrelationships among Early Triassic faunas of Western Gondwana and Laurasia as illuminated by a new South American benthosuchid temnospondyl Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-19 Felipe L. Pinheiro, Estevan Eltink, Voltaire D. Paes-Neto, Arielli F. Machado, Tiago R. Simões, Stephanie E. Pierce
The End-Permian Mass Extinction marked a critical turning point in Earth's history, and the biological recovery that followed the crisis led to the emergence of several modern vertebrate and invertebrate taxa. Even considering the importance of the Early Triassic biotic recovery for the evolution of modern faunas and floras, our knowledge of this event is still hindered by the sparse sampling of crucial
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Assessing the adductor musculature and jaw mechanics of Proterochampsa nodosa (Archosauriformes: Proterochampsidae) through finite element analysis Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-19 Daniel de Simão-Oliveira, Tiago dos Santos, Felipe Lima Pinheiro, Flávio Augusto Pretto
Proterochampsids are a group of South American nonarchosaurian archosauromorphs whose general morphology has been historically likened to that of the extant Crocodylia, which purportedly exhibited similar habits by convergence. Taxa from the genus Proterochampsa, for example, show platyrostral skulls with dorsally faced orbits and external nares and elongated snouts that might indicate a feeding habit
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Weighing in on miniaturization: New body mass estimates for Triassic eucynodonts and analyses of body size evolution during the cynodont-mammal transition Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-16 João Felipe Leal Kaiuca, Agustín Guillermo Martinelli, Cesar Leandro Schultz, Pedro Henrique Morais Fonseca, William Corrêa Tavares, Marina Bento Soares
Body size influences most aspects of an animal's biology, consequently, evolutionary diversification is often accompanied by differentiation of body sizes within a lineage. It is accepted that miniaturization, or the evolution of extremely small body sizes, played a key role in the origin and early evolution of different mammalian characters in non-mammaliaform cynodonts. However, while there are multiple
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Garzapelta muelleri gen. et sp. nov., a new aetosaur (Archosauria: Pseudosuchia) from the Late Triassic (middle Norian) middle Cooper Canyon Formation, Dockum Group, Texas, USA, and its implications on our understanding of the morphological disparity of the aetosaurian dorsal carapace Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-11 William A. Reyes, Jeffrey W. Martz, Bryan J. Small
The Late Triassic Dockum Group in northwestern Texas preserves a rich diversity of pseudosuchian taxa, particularly of aetosaurs. In this contribution, we present Garzapelta muelleri gen. et sp. nov., a new aetosaur from the Late Triassic middle Cooper Canyon Formation (latest Adamanian–earliest Revueltian teilzones) in Garza County, Texas, based on an associated specimen that preserves a significant
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Evolution of the temporal skull openings in land vertebrates: A hypothetical framework on the basis of biomechanics Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-10 Ingmar Werneburg, Holger Preuschoft
The complex constructions of land vertebrate skulls have inspired a number of functional analyses. In the present study, we provide a basic view on skull biomechanics and offer a framework for more general observations using advanced modeling approaches in the future. We concentrate our discussion on the cranial openings in the temporal skull region and work out two major, feeding-related factors that
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Innervation and osteoclast distribution in the inferior pharyngeal jaw of the cichlid Nile tilapia (Oreochromis niloticus) Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-06 Kosuke Imura, Akihito Takeda, Masato Endo, Kengo Funakoshi
In addition to an oral jaw, cichlids have a pharyngeal jaw, which is used for crushing and processing captured prey. The teeth and morphology of the pharyngeal jaw bones adapt to changes in prey in response to changes in the growing environment. This study aimed to explore the possible involvement of the peripheral nervous system in remodeling the cichlid pharyngeal jaw by examining the innervation
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A foundational description of Antilocapra americana pronghorn core osteohistology Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2024-01-03 Katherine W. Slenker, Holly N. Woodward, Haley D. O'Brien
Cranial bony projections (“headgear”) have diverse forms and functions, such as defense, species recognition, mate selection, and thermoregulation. Most commonly, they are associated with the artiodactyl infraorder, Pecora. All pecoran headgear—antlers, horns, ossicones, and pronghorns—are osseous protrusions of the frontal or parietal bone with an integumentary covering, although there is taxonomic
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Correction to “Osteology of the late triassic bipedal archosaur Poposaurus gracilis (Archosauria: Pseudosuchia) from Western North America” Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2023-12-22
Schachner, E. R., Irmis, R. B., Huttenlocker, A. K., Sanders, K., Cieri, R. L., Fox, M., & Nesbitt, S. J. (2020). Osteology of the late triassic bipedal archosaur Poposaurus gracilis (Archosauria: Pseudosuchia) from Western North America. The Anatomical Record, 303, 874–917. A corrigendum is hereby issued to formally include Marylin Fox as a coauthor in the author list of the published article. Marylin
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First CT-assisted study of the palate and postcrania of Diarthrognathus broomi (Cynodontia, Probainognathia) Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2023-12-22 Erin S. Lund, Luke A. Norton, Julien Benoit
Diarthrognathus broomi is a transitional taxon between non-mammaliaform cynodonts and Mammaliaformes that occurred during the Late Triassic to Early Jurassic. All known specimens of Diarthrognathus represent juveniles, and the postcrania have not been thoroughly described. The palatal, basicranial and postcranial elements of the referred specimen NMQR 1535 are described here for the first time using
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Paleoneurology and neuroanatomical notes on the South American “rauisuchian” Saurosuchus galilei from the Ischigualasto formation, San Juan, Argentina Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2023-12-22 M. Belén von Baczko, Ariel F. Cardillo, Karen Ulloa-Guaiquin, Julia B. Desojo, Ariana Paulina-Carabajal
Non-crocodylomorph loricatans, traditionally known as “rauisuchians,” are considered as the top predators of the Triassic continental faunas that reigned before the emergence of the well-known theropod dinosaurs. In particular, Saurosuchus galilei is a large quadrupedal prestosuchid loricatan found in the Ischigualasto Formation from northwestern Argentina. Here, we reevaluated the braincase of S.
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Neuroanatomy and pneumaticity of the extinct Malagasy “horned” crocodile Voay robustus and its implications for crocodylid phylogeny and palaeoecology Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2023-12-20 Gwendal Perrichon, Yohan Pochat-Cottilloux, Davide Conedera, Pascale Richardin, Vincent Fernandez, Lionel Hautier, Jeremy E. Martin
Voay robustus, the extinct Malagasy “horned” crocodile, was originally considered to be the only crocodylian representative in Madagascar during most part of the Holocene. However, Malagasy crocodylian remains have had confused taxonomic attributions and recent studies have underlined that Crocodylus and Voay populations coexisted on the island for at least 7500 years. Here, we describe the inner braincase
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Testing the reliability of the rearticulation of osteological primate pelves in comparative morphological studies Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2023-12-19 Nicole Torres-Tamayo, Todd C. Rae, Eishi Hirasaki, Lia Betti
The evolution of human pelvic form is primarily studied using disarticulated osteological material of living and fossil primates that need rearticulation to approximate anatomical position. To test whether this technique introduces errors that impact biological signals, virtual rearticulations of the pelvis in anatomical position from computed tomography scans were compared with rearticulated models
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Do fossorial water voles have a functional vomeronasal organ? A histological and immunohistochemical study Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2023-12-19 Sara Ruiz-Rubio, Irene Ortiz-Leal, Mateo V. Torres, Aitor Somoano, Pablo Sanchez-Quinteiro
The fossorial water vole, Arvicola scherman, is an herbivorous rodent that causes significant agricultural damages. The application of cairomones and alarm pheromones emerges as a promising sustainable method to improve its integrated management. These chemical signals would induce stress responses that could interfere with the species regular reproductive cycles and induce aversive reactions, steering
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Correction to “Functional dopaminergic neurons derived from human chorionic mesenchymal stem cells ameliorate striatal atrophy and improve behavioral deficits in Parkinsonian rat model” Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2023-12-19
Ebrahimi, V., Eskandarian Boroujeni, M., Aliaghaei, A., Abdollahifar, M. A., Piryaei, A., Haghir, H. & Sadeghi, Y. (2020). Functional dopaminergic neurons derived from human chorionic mesenchymal stem cells ameliorate striatal atrophy and improve behavioral deficits in Parkinsonian rat model. The Anatomical Record, 303, 2274–2289. https://doi.org/10.1002/ar.24301 A new version of Figure 1d, free from
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The topological organization of the turtle cranium is constrained and conserved over long evolutionary timescales Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2023-12-16 Eve Miller, Hiu Wai Lee, Arkhat Abzhanov, Serjoscha W. Evers
The cranium of turtles (Testudines) is characterized by the secondary reduction of temporal fenestrae and loss of cranial joints (i.e., characteristics of anapsid, akinetic skulls). Evolution and ontogeny of the turtle cranium are associated with shape changes. Cranial shape variation among Testudines can partially be explained by dietary and functional adaptations (neck retraction), but it is unclear
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Comparing age- and bone-related differences in collagen fiber orientation: A case study of bats and laboratory mice using quantitative polarized light microscopy Anat. Rec. Adv. Integr. Anat. Evolut. Biol. (IF 2.0) Pub Date : 2023-12-14 Tobin Lee Hieronymus, David A. Waugh, Hope C. Ball, Christopher J. Vinyard, Alex Galazyuk, Lisa Noelle Cooper
As bones age in most mammals, they typically become more fragile. This state of bone fragility is often associated with more homogenous collagen fiber orientations (CFO). Unlike most mammals, bats maintain mechanically competent bone throughout their lifespans, but little is known of positional and age-related changes in CFO within wing bones. This study tests the hypothesis that age-related changes