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First record of the trace fossil Protovirgularia in the Passaic Formation (Late Triassic), Newark Supergroup, near Milford, New Jersey Ichnos (IF 1.469) Pub Date : 2020-10-29 Robert Metz
Abstract Fine-grained siltstones of the Late Triassic Passaic Formation, near Milford, New Jersey, has yielded the first evidence of the trace fossil Protovirgularia in the Newark Supergroup of New Jersey. Associated trace fossils include Helminthoidichnites, Lockeia, Scoyenia, Spongeliomorpha, and the reptile footprint Rhynchosauroides, representing the Scoyenia ichnofacies. Associated sedimentary
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Freshwater to low salinity expression of Cretaceous Glossifungites-demarcated autogenic stratigraphic surfaces, central Utah Ichnos (IF 1.469) Pub Date : 2020-12-16 Michael R. King; Scott E. Botterill; Murray K. Gingras; James A. MacEachern
Abstract One of the most important contributions that S. George Pemberton made to the field of ichnology was the identification that burrowed firmgrounds associated with the Glossifungites Ichnofacies, commonly demarcate important sequence stratigraphic allogenic surfaces, and more recently described autogenic surfaces. This study considers an outcrop example from the Turonian Ferron Sandstone of central
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Trace fossils, depositional context, and paleogeography of the upper Tal Group (upper lower Cambrian), Lesser Himalaya, India: a Gondwanan succession with no affinities to the Avalonia microcontinent – discussion of paper by Singh et al. (2019) Ichnos (IF 1.469) Pub Date : 2020-11-30 Ed Landing; Gerd Geyer
Abstract Terminal Ediacaran–late early Cambrian deposition, faunas and passive margin evolution of the north Indian margin are recorded in the Nigali Dhar syncline succession. Restudy of the upper Tal Group (upper lower Cambrian Koti Dhaman Formation, KDF) ichnofauna from the Khud-Drabil section reduces it to 18 confidently named forms. The lower KDF (Lower Quartzite Member) Cruziana-Rusophycus assemblage
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Burrows of the common field-cricket Gryllus campestris Linnaeus, 1758 (Orthoptera: Gryllidae) from Dajti Mountain, Albania Ichnos (IF 1.469) Pub Date : 2020-11-20 Blerina Vrenozi; Alfred Uchman
Abstract Considerable studies of the univoltine, common field-cricket Gryllus campestris Linnaeus, 1758, known from sunny oligotrophic grasslands and heathlands of the western Palaearctic, were previously made, but none of them has shown the characteristics of its burrows. This paper presents a neoichnological study based on a group of G. campestris that lives in and around a pasture glade in Dajti
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Segmentichnus mohri igen. et isp. nov., a giant new trace fossil from the Culm facies (lower Carboniferous) of the Franconian Forest (Saxothuringian Belt, Germany) Ichnos (IF 1.469) Pub Date : 2020-11-06 Alfred Uchman; Gerd Geyer
Abstract A new ichnogenus and ichnospecies, Segmentichnus mohri, is recognized in the lower Carboniferous deep-sea Culm facies deposits in the southern Germany. The trace fossil is an unusually large, horizontal, tubular burrow with primary successive branching and transverse annulation with ring-like, slightly irregular swellings, without wall, preserved in full relief in dark grey slate. Segmentichnus
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Cubichnia and Praedichnia in fossil ichnites of a flat fish from the Lower Cretaceous Talmest palaeoichnological site, Western High Atlas (Morocco) Ichnos (IF 1.469) Pub Date : 2020-11-05 Noura Lkebir; Moussa Masrour; Angélica Torices; Félix Pérez-Lorente
Abstract During a study of the Talmest ichnological site (2011–2012), where theropod and sauropod tracks were discovered, other ichnites were found that are analyzed in the present work. There are two basic types attributed to two different activities produced by the same vertebrate at the bottom of a flooded area. One type (Cubichnia) is produced by sliding on the bottom surface while the other (Praedichnia)
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Trace fossils Ichnos (IF 1.469) Pub Date : 2020-11-03 Stephen K. Donovan
(2020). Trace fossils. Ichnos. Ahead of Print.
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Horseshoe crab trace fossils and associated ichnofauna of the Pony Creek Shale Lagerstätte, Upper Pennsylvanian, Kansas, USA Ichnos (IF 1.469) Pub Date : 2020-08-30 Wade W. Leibach; Nick Rose; Kenneth Bader; Laura J. Mohr; Kristopher Super; Julien Kimmig
The uppermost Pennsylvanian Pony Creek Shale Lagerstätte (Pony Creek Shale Member, Wood Siding Formation, Wabaunsee Group) near Maple Hill, Wabaunsee County, Kansas, contains exceptionally preserved horseshoe crab (Xiphosura) fossils. Associated with these fossils is an ichnofauna that includes trace fossils assumed to be produced by xiphosurids, as well as coprolites and a few burrows. Of the trace
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One legacy: ONE ICHNOLOGY! Richard Granville Bromley (1939–2018) Ichnos (IF 1.469) Pub Date : 2020-07-15 Lothar H. Vallon; Kurt S. S. Nielsen; Jesper Milàn; Allan A. Ekdale; Andrew K. Rindsberg; Tina A. Kjeldahl-Vallon
(2020). One legacy: ONE ICHNOLOGY! Richard Granville Bromley (1939–2018) Ichnos: Vol. 27, Richard G. Bromley Memorial Issue, pp. 249-257.
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Move, burrow, feed – repeat! A compound trace fossil from the Solnhofen Plattenkalke possibly made by holothurians Ichnos (IF 1.469) Pub Date : 2020-07-22 Lothar H. Vallon; Andrew K. Rindsberg; Martin Röper; Monika Rothgaenger; Klaus Rothgaenger
Bromlichnus bromleyi n.igen. n.isp., a compound trace fossil consisting of two segments representing dwelling and feeding, is described. Owing to a concentric spreite in a bow-shaped burrow, B. bromleyi is interpreted as made by holothurians. In most cases, it is connected to a repichnion. The new ichnotaxon derives from the narrow Pfalzpaint Subbasin of the Solnhofen archipelago (Upper Jurassic, SE
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An etched turtle bone from the Paleogene of the Isle of Wight, UK Ichnos (IF 1.469) Pub Date : 2020-07-28 Stephen K. Donovan; Martin I. Simpson
Many aspects of the palaeontology of the Isle of Wight are well known, but less so its ichnology. A turtle bone, Emys? sp., from the Lower Oligocene (Rupelian) Hamstead Member, Bouldnor Formation, exposed on the north coast of the island, preserves an unusual surface etching. Dictyoporus nodosus Mägdefrau is recorded from the Paleogene for the first time; hitherto, in northern Europe, it was only known
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IchnoDB: structure and importance of an ichnology database Ichnos (IF 1.469) Pub Date : 2020-07-16 Dean M. Meek; Bruce M. Eglington; Luis A. Buatois; M. Gabriela Mángano
The design of a relational database for ichnological data is presented to illustrate and address deficiencies in present-day palaeontological databases. Currently, palaeontology databases apply concepts and terminology derived from the study of body fossils to trace fossil records. We suggest that fundamental differences between body and trace fossils make this practice inappropriate. These differences
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Bivalve borings in Maastrichtian fossil Nypa fruits: Dakhla Formation, Bir Abu Minqar, South Western Desert, Egypt Ichnos (IF 1.469) Pub Date : 2020-07-01 M. El Hedeny; W. Kassab; M. Rashwan; G. Abu El-Kheir; M. AbdelGawad
Disconnected aggregates of allochthonous fossil Nypa fruits occur in the Ammonite Hill Member of the Dakhla Formation (Maastrichtian), exposed at the Bir Abu Minqar section, south Western Desert of Egypt. In a pale brown, calcareous siltstone and/or fine-grained sandstone layer, the fossil fruits found are densely infested by the borings Teredolites clavatus and Apectoichnus longissimus. In the specimens
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Vertebrate footprints and a mammal mud-bath trace fossil (Laspichnia) from the Mukdadiya Formation (Late Miocene–Pliocene), Chamchamal Area, Kurdistan Region, Northeast Iraq Ichnos (IF 1.469) Pub Date : 2020-07-01 Nasrollah Abbassi; Kamal H. Karim; Ibrahim M. J. Mohialdeen; Khalid M. Sharbazheri
The Mukdadiya Formation (Late Miocene–Pliocene) consists of alternations of red to brown sandstone and claystone layers in the Zagros Mountains Belt, northeastern Iraq. Two tracksites preserving bird and mammal tracks were recorded from the base of the formation in the Chamchamal area of the Kurdistan region in northeast Iraq. Avian tracks are large footprints with an average length of 25 cm that belong
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First description of the ichnofauna from the type locality of the Famennian stage (Late Devonian) of S Belgium Ichnos (IF 1.469) Pub Date : 2020-05-22 Cassian Morelle; Julien Denayer
Abstract Ichnofossils from the type locality of the Famennian are here described and figured for the first time. The siliciclastic supratidal alluvial to proximal subtidal deposits of S Belgium yield a diverse ichnofauna composed of Arenicolites ispp. (two morphotypes), Chondrites intricatus, Diplocraterion isp., Dolopichnus gulosus, Gordia marina, Helminthopsis isp., Lockeia cordata, L. siliquaria
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Rhizocorallium and turtle tracks: a late Cretaceous proximal distributary channel trace-fossil assemblage, central Utah Ichnos (IF 1.469) Pub Date : 2020-05-20 M. Ryan King; Scott E. Botterill; Murray K. Gingras; S. George Pemberton
Abstract A proximal distributary channel deposit in the Turonian Ferron Sandstone of central Utah contains a trace-fossil assemblage comprised of turtle tracks (Chelonipus), vertebrate swim trace fossils (Characichnos), repichnial traces of mollusks (Archaeonassa), Rhizocorallium, and Teredolites. Mayflies are abundant producers of horizontal, spreiten, U-shaped burrows in modern freshwater channels
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A new shallow-marine, high-latitude record of the trace fossil Macaronichnus in Miocene, reworked delta-front clinoforms, Punta Basílica, Tierra Del Fuego, Argentina Ichnos (IF 1.469) Pub Date : 2020-04-24 Eduardo B. Olivero; María I. López Cabrera
Abstract A new high-latitude record of the trace fossil Macaronichnus segregatis degiberti is documented from the lower Miocene Punta Basílica beds, Tierra del Fuego, which were previously considered to be deep-marine channel and levee deposits. Based on a combined ichnological and sedimentological study, however, these beds are herein re-interpreted as shallow-marine, delta-front clinoform deposits
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Correction Ichnos (IF 1.469) Pub Date : 2019-03-05
(2020). Correction. Ichnos: Vol. 27, No. 1, pp. 80-80.
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Insect trace fossils in glyptodonts from Uruguay Ichnos (IF 1.469) Pub Date : 2019-03-27 Daniel Perea; Mariano Verde; Felipe Montenegro; Pablo Toriño; Aldo Manzuetti; Guillermo Roland
The association of vertebrate remains and invertebrate traces, although less studied than other bioerosion traces, provides important paleoecological information. This report describes Cubiculum ornatum Roberts, Rogers, and Foreman 2007 Roberts, E., R. Rogers, and B. Foreman. 2007. Continental insect borings in dinosaur bone: examples from the Late Cretaceous of Madagascar and Utah. Journal of Paleontology
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Oichnus simplex Bromley infesting Hemipneustes striatoradiatus (Leske) (Echinoidea) from the Maastrichtian type area (Upper Cretaceous, The Netherlands) Ichnos (IF 1.469) Pub Date : 2019-03-26 Stephen K. Donovan; John W. M. Jagt
The large holasteroid echinoid Hemipneustes striatoradiatus (Leske) was exploited by diverse invertebrate encrusters and borers during the Maastrichtian, both pre- and post-mortem. In life, the specimen described herein was perforated by multiple Oichnus simplex Bromley borings close to the apical system. Each engendered a growth reaction from the echinoid, a mound-like swelling on the external surface
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Ichnological analysis of Jurassic shallow to marginal marine deposits: example from Wagad Highland, Western India Ichnos (IF 1.469) Pub Date : 2019-08-12 Jaquilin K. Joseph; Satish J. Patel; Jehova L. Darngawn; Apurva D. Shitole
Jurassic deposits of shallow to marginal marine (delta) environments are widely reported from different continents of the world. This study shows inter-relationship of the animal-sediment behaviours in shallow and marginal marine conditions, suggesting an interpretation of the possible ichnodisparity. The Jurassic succession exposed at Washtawa Dome and Adhoi Anticline of Wagad highland, Kachchh comprises
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Integrated sedimentological, ichnological and sequence stratigraphical studies of the Koti Dhaman Formation (Tal Group), Nigali Dhar Syncline, Lesser Himalaya, India: paleoenvironmental, paleoecological, paleogeographic significance Ichnos (IF 1.469) Pub Date : 2019-04-13 Birendra P. Singh; Om N. Bhargava; Radek Mikuláš; Scott Morrision; Ramanpreet Kaur; Garry Singla; Naval Kishore; Neeraj Kumar; Rohit Kumar; Sakshi Moudgil
Integrated ichnology, sedimentology and sequence stratigraphy of the Lower Quartzite Member to the Arkosic Sandstone Member of the Koti Dhaman Formation (Cambrian Series 2, Stage 4), Tal Group, Nigali Dhar Syncline, Lesser Himalayan lithotectonic zone are presented. Trilobite traces of Gondwanan affinity i.e., Cruziana salomonis, Cruziana fasciculata, Rusophycus dispar and Rusophycus burjensis are
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Avian diversity and behavior in an Eocene coastal plain, Svalbard: the ichnological evidence Ichnos (IF 1.469) Pub Date : 2020-04-15 Ricardo N. Melchor; Alfred Uchman; Ronald J. Steel
This study presents an ichnotaxonomical assessment of bird footprints from a coastal plain setting in the Eocene lower to middle Aspelintoppen Formation in Brongniartfjellet and Storvola, Svalbard. These footprints are unique evidence for Paleogene birds from Svalbard and the second evidence of Paleogene avifauna of the Arctic (along with scarce fossil remains from Ellesmere Island). The analyzed footprints
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Ichnologic note first occurrence of the microcoprolite Palaxius salataensis in the Aptian (Lower Cretaceous) of northeast Mexico and its paleoecological implications Ichnos (IF 1.469) Pub Date : 2020-04-11 Miguel A. Torres-Martínez; Fernando Núñez-Useche; Ricardo Barragán
Abstract Microcoprolites of Palaxius salataensis are non-skeletal carbonate grains produced by callianassid shrimps. This ichnospecies is recognized by four longitudinal canals arranged around a bilateral plane of symmetry, with crescent outline in cross-section. Palaxius salataensis has been previously reported from other countries and in strata from the late Paleozoic to the Mesozoic. In this study
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Tracking the last elephants in Europe during the Würm Pleniglacial: the importance of the Late Pleistocene aeolianite record in SW Iberia Ichnos (IF 1.469) Pub Date : 2020-04-10 Carlos Neto de Carvalho; Silvério Figueiredo; Fernando Muniz; João Belo; Pedro P. Cunha; Andrea Baucon; Luis M. Cáceres; Joaquín Rodriguez-Vidal
In his short joint ventures across the world of vertebrate tracks, Richard Bromley recognized the aeolian sands as unsuitable soft substrates for their preservation. Only after his work in the Balearic Islands, a more systematic study of coastal aeolianites worldwide revealed that these depositional systems could preserve a highly important record of behavioural trace fossils for the evolution of vertebrates
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Bowl-shaped structures in a Pleistocene clastic carbonate wedge on the Island of Rhodes, Greece Ichnos (IF 1.469) Pub Date : 2020-04-10 Jan Kresten Nielsen; Masakazu Nara; Aase Roland Jacobsen
Bowl-shaped structures are for the first time reported from the Greek Island of Rhodes. They occur in Pleistocene deposits of the Cape Arkhangelos Formation in the Rhodes Synthem. The regularity of their three-dimensional appearance is the argument for a biological origin. This gives the reason to assign the structures to Piscichnus waitemata for which we issue a formal diagnosis. They were formed
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Cutting-edge technology: burrows lined with sponge bioclasts from the Upper Cretaceous of Denmark Ichnos (IF 1.469) Pub Date : 2020-04-09 Lothar H. Vallon; Jesper Milàn; Andrew K. Rindsberg; Henrik Madsen; Jan Audun Rasmussen
Many tracemakers use different materials to line their burrows. Koptichnus rasmussenae n. igen. n. isp. is lined with cuboid fragments of siliceous sponges, interpreted as evidence of harvesting and trimming material to reinforce the burrow wall. The act of trimming, as evidenced in the polyhedral faces, is considered to be behaviourally significant. The tracemaker was evidently a lobster-like crustacean
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Scolicia and its producer in shallow-marine deposits of the Miocene Chenque Formation (Patagonia, Argentina): functional morphology and implications for understanding burrowing behavior Ichnos (IF 1.469) Pub Date : 2020-04-07 Noelia B. Carmona; M. Gabriela Mángano; Luis A. Buatois; Richard G. Bromley; Juan José Ponce; Ulla Asgaard; Eduardo Bellosi
Scolicia is one of the most conspicuous trace fossils in lower shoreface deposits of the Miocene Chenque Formation of Patagonia, Argentina. This ichnotaxon consists of horizontal, sinuous or meandering trace fossils with a laminated backfill and two parallel strings located at the base. Abundant body fossils attributed to Brisaster iheringi occur in close association to these trace fossils. The echinoids
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New ichnospecies of Linichnus Jacobsen & Bromley, 2009 Ichnos (IF 1.469) Pub Date : 2020-04-07 Fernando Muñiz; Zain Belaústegui; Antonio Toscano; Samuel Ramirez-Cruzado; José A. Gámez Vintaned
A new ichnospecies, Linichnus bromleyi, is described on bone substrate as the result of a very likely predator/scavenger interaction. L. bromleyi consists of a single groove with a non-serrated edge. This new ichnotaxon is compared with L. serratus which was defined as a single elongate serrate-edged groove. L. bromleyi has been identified over the surface of bones of marine mammals (in particular
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An insect boring in an Early Cretaceous wood from Bornholm, Denmark Ichnos (IF 1.469) Pub Date : 2020-04-03 Radek Mikuláš; Jesper Milàn; Jorge F. Genise; Markus Bertling; Richard G. Bromley
An insect boring of unique shape is described from a lignitic layer within the Early Cretaceous (Berriasian) Skyttegård Member of the Rabekke Formation on Bornholm. Morphologically it cannot be compared to any modern or fossil wood borings, although some structures are reminiscent of Scolytidae, Platypodidae and Lymexylonidae. Most probably, however, the tracemaker was a female fungus-farming beetle
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Scolicia shirahamensis isp. nov.: a triple-corded scolicia and its ichnological implications Ichnos (IF 1.469) Pub Date : 2020-04-02 Masakazu Nara; Misako Seno’o; Yuta Yamaoka
Peculiar meniscate burrows with three sediment cords occur in early to middle Miocene tidal-flat deposits of southwestern Japan. Two of the cords are situated at the bottom and the other is at its center. Detailed observations of the burrow structures and comparative neoichnological studies of modern spatangoid burrows in a tidal flat revealed that the former two were true drainage tubes and the latter
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Image processing techniques to improve characterization of composite ichnofabrics Ichnos (IF 1.469) Pub Date : 2020-04-02 F. J. Rodríguez-Tovar; O. Miguez-Salas; J. Dorador
Image processing techniques, including the Analyze Particles tool offered by Fiji software and the Intensity Profile by ICY (IP-ICY), were applied in core and outcrop examples to improve characterization of autocomposite ichnofabrics. Analyze Particles gives information about particle shape and size in the studied image. This tool was applied to Chondrites assemblages in composite ichnofabrics in view
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Does trace density reflect tracemaker density? A test using intertidal gastropods on San Salvador Island, the Bahamas Ichnos (IF 1.469) Pub Date : 2020-04-02 Shannon Hsieh
Trace densities may be a potential proxy for tracemaker densities, especially in settings where traces but not body fossils preserve well. The relationship between the density of the gastropod Batillaria minima and its trails was examined in a modern muddy intertidal zone of a lagoon on San Salvador Island, the Bahamas. The number of snails found within a quadrat was a moderately positive predictor
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Ichnogeny and bivalve bioerosion: examples from shell and wood substrates Ichnos (IF 1.469) Pub Date : 2020-04-01 Zain Belaústegui; Fernando Muñiz; Rosa Domènech; Jordi Martinell
The ichnospecies Gastrochaneolites dijugus Kelly and Bromley 1984 Kelly, S. R. A., and R. G. Bromley. 1984. “Ichnological Nomenclature of Clavate Borings.” Palaeontology 27: 793–807.[Web of Science ®] , [Google Scholar] and Teredolites longissimus Kelly and Bromley 1984 Kelly, S. R. A., and R. G. Bromley. 1984. “Ichnological Nomenclature of Clavate Borings.” Palaeontology 27: 793–807.[Web of Science
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Behavioral stereotypy and some ecological consequences of entrance-shaft placement of the domichnium Sanctum laurentiensis in Ordovician trepostomate Bryozoa Ichnos (IF 1.469) Pub Date : 2020-04-01 J. Mark Erickson
The ichnofossil Sanctum laurentiensis from the Late Ordovician (Cincinnatian) of Laurentia is a domichnium tunneled into live colonies of ramose and frondose trepostome Bryozoa. A preferred entrance location was chosen by the trace-making endoskeletozoan. The organism chose to tunnel in positions near growing tips of branches where one of two conditions prevailed. At stereotypical sites, here considered
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Zoophycos in storm-affected environments: a case study from lower Maastrichtian deposits of the Mateur-Beja area (Northern Tunisia) Ichnos (IF 1.469) Pub Date : 2020-02-25 Fehmy Belghouthi; Andreas Wetzel; Hédi Zouari; Rekaya-Selwa Jeddi
The lower Maastrichtian deposits of the Mateur-Beja area in northern Tunisia are mainly composed of fine-grained marl and limestone alternations occasionally interbedded by coarse-grained calcarenites and gravel deposits. In the coarse-grained intervals sedimentary structures are indicative of storm-induced high-energy currents in an outer ramp to slope setting and of local reworking by bottom currents
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Trace fossils in fluvial deposits of the uppermost Stockton Formation (Late Triassic), Newark Basin, New Jersey Ichnos (IF 1.469) Pub Date : 2020-01-17 Robert Metz
Fluvial deposits of the uppermost Stockton Formation (Late Triassic), Newark Basin, west-central New Jersey have yielded an assemblage of trace fossils. Dominated by burrows, specimens include Cochlichnus anguineus, Helminthoidichnites tenuis, Planolites beverleyensis, Scoyenia gracilis, Spongeliomorpha carlsbergi, Treptichnus bifurcus, Treptichnus pollardi, plant remains, and an undetermined vertebrate
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Book review Ichnos (IF 1.469) Pub Date : 2019-12-27 Martin Lockley
(2020). Book review. Ichnos: Vol. 27, No. 2, pp. 247-248.
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Macroborings in Otodus megalodon and Otodus chubutensis shark teeth from the submerged shelf of Onslow Bay, North Carolina, USA: implications for processes of lag deposit formation Ichnos (IF 1.469) Pub Date : 2019-12-17 Harry M. Maisch IV; Martin A. Becker; John A. Chamberlain Jr.
The shallow continental shelf in the Cape Fear Region of southwestern Onslow Bay, North Carolina, contains lag deposits with an abundance of megatoothed shark teeth belonging to Otodus megalodon (Agassiz 1835) and Otodus chubutensis (Ameghino 1906) that derive from the Pliocene Yorktown and Miocene Pungo River formations, respectively. These teeth exhibit different frequencies and orientations of macroborings
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Thunder lizard handstands: Manus-only sauropod trackways from the Glen Rose Formation (Lower Cretaceous, Kendall County, Texas) Ichnos (IF 1.469) Pub Date : 2019-12-13 James O. Farlow; Robert T. Bakker; Benjamin F. Dattilo; E. Everett Deschner; Peter L. Falkingham; Crystal Harter; Richard Solis; David Temple; William Ward
Three parallel, manus-only sauropod trackways from the Coffee Hollow A-Male tracksite (Glen Rose Formation, Kendall County, Texas) were studied separately by researchers from the Heritage Museum of the Texas Hill Country and the Houston Museum of Natural Sciences. Footprint and trackway measurements generally show good agreement between the two groups’ data sets. Footprints appear to be shallowly impressed
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Plant-insect interactions in the fossil flora of the Bajo de Veliz Formation (Gzhelian - Asselian): San Luis, Argentina Ichnos (IF 1.469) Pub Date : 2019-12-11 Johana A. Fernández; Jorge O. Chiesa
This article presents a detailed description of insect trace fossils found in the megaflora of the Gzhelian-Asselian of the Bajo de Veliz. Plant-insect interactions are analyzed on 212 specimens of leaves from this flora, characterized by glossopterid (Gangamopteris, Euryphyllum, Glossopteris), cordaitales, sphenophytes, pteridosperms, lycophytes, conifers and seeds. Marginal feeding, surface and oviposition
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Ichnologic note: in defence of Thatchtelithichnus Zonneveld, Bartels, Gunnell and McHugh, 2015 Ichnos (IF 1.469) Pub Date : 2019-12-09 John-Paul Zonneveld; William S. Bartels
The validity of the monotypic ichnogenus Thatchtelithichnus has been called into question due to an inference that it is a bioclaustration. Close analysis of the Thatchtelithichnus holmani holotype reveals that no part of this ichnotaxon involves a bioclaustration, and thus it remains a valid ichnotaxon. Thatchtelithichnus holmani has been observed on the bottom shell (plastron) of cryptodiran and
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The crustaceans burrow Sinusichnus sinuosus from the Oligocene-Miocene carbonate deposits of eastern Amazonia Ichnos (IF 1.469) Pub Date : 2019-12-05 Joelson L. Soares; Hudson P. Santos; Ailton da S. Brito; Anna Andressa E. Nogueira; Afonso C. R. Nogueira; Kamilla B. Amorim
Sinusichnus Gibert 1996 Gibert, J. M. d. 1996. “A New Decapod Burrow System from the NW Mediterranean Pliocene.” Revista Española de Paleontología 11: 251–254. [Google Scholar] is recorded for the first time in the Oligocene-Miocene Pirabas Formation of Northern Brazil. In these Oligocene-Miocene carbonate deposits, Sinusichnus sinuosus is characterized by horizontal, highly regular sinusoidal burrow
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The “Plastotype Problem” in Ichnological Taxonomy Ichnos (IF 1.469) Pub Date : 2019-12-02 Spencer G. Lucas; Jerald D. Harris
When naming ichnotaxa based on uncollectable trace fossils, the holotype is the actual ichnofossil in the outcrop, though some ichnologists identify the holotype as a replica (cast) held in a museum collection, and refer to it as a “plastotype,” although not all such replicas are made from plaster. Nevertheless, through its Code, the International Commission on Zoological Nomenclature (ICZN) makes
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Book review Ichnos (IF 1.469) Pub Date : 2019-11-13 Martin Lockley
(2020). Book review. Ichnos: Vol. 27, No. 2, pp. 244-246.
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First Record of Graphoglyptids in Cyprus: Indicative Presence of Turbidite Deposits at the Pakhna Formation Ichnos (IF 1.469) Pub Date : 2019-11-13 Francisco J. Rodríguez-Tovar; Olmo Miguez-Salas; Francisco J. Hernández-Molina; Heiko Hüneke
Ichnological analysis at the Pakhna Formation (Miocene, Cyprus) reveals, for the first time, the presence of graphoglyptid structures. The Pakhna Formation is dominated by pelagic/hemipelagic sediments, together with contourite, reworked turbidite and turbidite facies. Thus, a complex interaction between pelagic, bottom-current and gravitational sedimentation is envisaged. The discernment of facies
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From Shepard to Barber to Ichnologist: The Marie Rouault Story Ichnos (IF 1.469) Pub Date : 2019-08-21 S. George Pemberton, Erin A. L. Pemberton
Marie Rouault was a French-born self-made paleontologist who left school at the age of 10. He then worked as a shepherd and spent a considerable portion of his life as a barber. During this period, he developed a keen interest in the rocks surrounding the city of Rennes in Brittany, northwestern France. All his free time was spent collecting the prolific fossils that he encountered. His collection
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The armored burrow Nummipera eocenica from the upper Eocene San Jacinto Formation, Colombia: morphology and paleoenvironmental implications Ichnos (IF 1.469) Pub Date : 2019-07-22 Gabriel Mendoza-Rodríguez; Luis A. Buatois; Daniel Rincón-Martínez; M. Gabriela Mángano; Claudia Baumgartner-Mora
The ichnospecies Nummipera eocenica occurs in thick-bedded, tabular bioclastic massive sandstone of the upper Eocene San Jacinto Formation in the San Jacinto Fold Belt Basin, Colombia. Nummipera eocenica is a vertical to oblique burrow locally displaying a conical shape. The lining structure of the specimens studied consists of uniformly distributed lepidocyclinids and operculinids, with tests typically
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Hyena hegemony: biogeography and taphonomy of Pleistocene vertebrate coprolites with description of a new mammoth coprolite ichnotaxon Ichnos (IF 1.469) Pub Date : 2019-05-29 Adrian P. Hunt; Spencer G. Lucas
In 1822, William Buckland first recognized Pleistocene vertebrate coprolites, and they are now known from more multiple localities with a global distribution. Carnivore coprolites dominate, and there are two distinct biogeographic and taphonomic provinces for vertebrate coprolites in the Pleistocene. The Castrocopros province of North and South America is characterized by a dominance of herbivore coprolites
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Second occurrence of the dinosauriform ichnogenus Atreipus in the western United States, Upper Triassic Chinle Group of Eastern Utah Ichnos (IF 1.469) Pub Date : 2019-05-13 John R. Foster; Martin G. Lockley
A newly discovered track in the Chinle Group north of Moab, Utah, is attributable to the ichnogenus Atreipus, an ichnotaxon that is relatively common in eastern North America (Newark Supergroup) but very rare in the Late Triassic of the western part of the continent. This is only the second report of the genus from the Chinle Group. Atreipus has been attributed to a silesaurid dinosauriform, and dinosauriform
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Obituary: Ron K. Pickerill (1947–2018) Ichnos (IF 1.469) Pub Date : 2019-03-26 Stephen K. Donovan, Robert B. MacNaughton, David G. Keighley, S. George Pemberton, Murray K. Gingras
(2019). Obituary: Ron K. Pickerill (1947–2018) Ichnos: Vol. 26, No. 4, pp. 303-315.
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First Report: Trace Fossil Assemblage Ptychoplasma (P. excelsum, P. vagans), Dendroidichnites (D. irregulare), Ctenopholeus (?C. kutcheri) and Bergaueria (B. hemispherica) in the Cretaceous Rocks of Bagh Formation, Mainland Gujarat, India Ichnos (IF 1.469) Pub Date : 2019-02-04 Balaji Bhosle, Carrie Johnson, Surendra Vaghela, Douglas J. Schultz, Vaibhav Dholakia
This report documents the discovery of repichnia trace fossils Ptychoplasma (P. excelsum and P. vagans) and Dendroidichnites (D. irregulare); the fodichnia traces ?Ctenopholeus (?C. kutcheri) and cubichnia traces Bergaueria (B. hemishperica) from silty limestones of the Cretaceous Bagh Formation. These trace fossils have significant implications for the depositional facies and the paleo-environmental
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The Ichnogenus Kouphichnium and Related Xiphosuran Traces from the Steven C. Minkin Paleozoic Footprint Site (Union Chapel Mine), Alabama, USA: Ichnotaxonomic and Paleoenvironmental Implications Ichnos (IF 1.469) Pub Date : 2019-02-04 Olivia A. King, Matthew R. Stimson, Spencer G. Lucas
The ichnogenus Kouphichnium and associated ichnofossils attributed to xiphosuran activity are here re-examined from samples collected from the Pennsylvanian-age Steven C. Minkin Fossil Site at the Union Chapel Mine, in Walker County, Alabama, USA. The large sample size offers an unique opportunity to evaluate some Kouphichnium ichnospecies. Thus, the morphological variability resulting from the taphonomic
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Foraminifera-walled Schaubcylindrichnus coronus Frey and Howard, 1981, from the Middle Eocene, Kachchh, Western India Ichnos (IF 1.469) Pub Date : 2019-01-24 Shweta S. Gurav, Kantimati G. Kulkarni
Bioclast lined tubes of Schaubcylindrichnus coronus are not much reported around the world. As of now only two reports are available. Interestingly in both these reports and in the current find, tests of foraminifers are used as tube building material. Current report of Schaubcylindrichnus is from the subtidal deposits of the Naredi Formation (Ypresian) of Kachchh Basin, Western India. As the host
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Evidence for Bipedal Prosauropods as the Likely Eubrontes Track-Makers Ichnos (IF 1.469) Pub Date : 2019-01-19 Robert E. Weems
The tridactyl ichnotaxon Eubrontes giganteus commonly has been attributed to a carnivorous theropod dinosaur similar to Dilophosaurus or Liliensternus. For this to be correct, however, at least five unusual circumstances all must be true. (1) If the Eubrontes track-maker was a theropod, it created the most abundant large tracks found in the Connecticut Valley Hartford and Deerfield basins and yet,
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The Fish Trail Undichna quadrisulcata isp. nov. from the Eocene of Spitsbergen Ichnos (IF 1.469) Pub Date : 2019-01-17 Dirk Knaust
Undichna quadrisulcata isp. nov. is described from the Eocene of Spitsbergen, where it occurs together with xiphosuran (horseshoe crabs) traces in upper shoreface to foreshore deltaic sandstone. This is the first record of a marine (deltaic) Undichna from the Eocene. The trail consists of two or three pairs of paralleling sinusoidal grooves (in epirelief) or ridges (in hyporelief). Previous records
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Gyrophyllites cristinae isp. nov. from Lower Ordovician Shallow-Marine Deposits of Northwest Argentina Ichnos (IF 1.469) Pub Date : 2018-12-30 Diego F. Muñoz, M. Gabriela Mángano, Luis A. Buatois
The lower Paleozoic marine siliciclastic succession of the Central Andean Basin, northwestern Argentina, provides a valuable record of the onset of the Great Ordovician Biodiversification Event in western Gondwana. A new ichnospecies of rosette trace fossil, Gyrophyllites cristinae, is documented from lower and upper Tremadocian (Tr1 and Tr2) deposits of this basin. It is characterized by five to six
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A Giant Protopaleodictyon from the Middle Cambrian of Western Canada Ichnos (IF 1.469) Pub Date : 2018-12-28 Chad A. Morgan, Charles M. Henderson, Brian R. Pratt
A new ichnospecies of Protopaleodictyon Książkiewicz, 1958 Książkiewicz, M. 1958. Stratigraphy of the Magura Series in the Średni Beskid (carpathians.). Biuletyn Instytutu Geologicznego 153:43–96. [In Polish, with English summary] [Google Scholar], Pr. aitkeni isp. n., is named from material recovered from the mid–Cambrian Stephen–Eldon formation transition in Banff National Park, Alberta, Canada.
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An Updated Review of the Avian Footprint Record from the Yacoraite Formation (Maastrichtian-Danian), Northwestern Argentina Ichnos (IF 1.469) Pub Date : 2018-12-28 Silvina de Valais, Carlos Cónsole-Gonella
The Yacoraite Formation (Maastrichtian–Danian; Balbuena Subgroup; Salta Group), from Northwestern Argentina, represents a shallow epeiric unit which is the result of transgressions in the Andean basin of South America. Herein, we study the avian footprints from the Maimará locality, Jujuy province, and Quebrada del Tapón ichnosite, Salta province. The avian footprints from the Maimará locality is less
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Molluskan Grazing Traces (Ichnogenus Radulichnus Voigt, 1977) on a Pleistocene Bivalve from Southern Brazil, With the Proposal of a New Ichnospecies Ichnos (IF 1.469) Pub Date : 2018-12-10 Renato Pereira Lopes, Jamil Corrêa Pereira
The ichnogenus Radulichnus Voigt, 1977 Voigt, E. 1977. On grazing traces produced by the radula of fossil and recent gastropods and chitons. In Trace fossils 2, eds. T. P. Crimes, and J. C. Harper, 335–346. Geological Journal, Special Issue 9. [Google Scholar] is recorded for the first time from a bivalve, Anomalocardia brasiliana (Gmelin, 1791 Gmelin, J. F. 1791. Caroli a Linné, Systema Naturae. Tom
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