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Neuroanatomical and neurosensorial analysis of the Late Cretaceous basal eusuchian Agaresuchus fontisensis (Cuenca, Spain)
Papers in Palaeontology ( IF 2.3 ) Pub Date : 2020-01-30 , DOI: 10.1002/spp2.1296
Alejandro Serrano‐Martínez 1 , Fabien Knoll 2, 3 , Iván Narváez 1 , Stephan Lautenschlager 4 , Francisco Ortega 1
Affiliation  

Agaresuchus fontisensis is an allodaposuchid crocodile from the Campanian–Maastrichtian (Late Cretaceous) of Lo Hueco (Cuenca, Spain). Allodaposuchidae is a clade of European basal eusuchians, which is considered a part of the stem group of Crocodylia. The holotype and paratype skulls of Agaresuchus fontisensis were scanned on computed tomography and their internal cavities, including those of the brain, nerves and blood vessels, as well as the paratympanic sinus system and the paranasal sinuses, digitally reconstructed. The cranial endocast and pneumatic sinuses were then compared with those of other crocodyliforms. The neuroanatomy of Agaresuchus fontisensis resembles those of other mesoeucrocodylians, sharing some morphological traits with extant crocodiles. The neurosensorial and cognitive capabilities inferred from the inner skull cavity reconstructions of Agaresuchus fontisensis are similar to those of other eusuchians. The olfactory acuity of Agaresuchus fontisensis is low by crocodylian standards, closer to that of the alligatoroids rather than to that of the crocodyloids. Its visual acuity is similar to that of Lohuecosuchus megadontos, a sympatric allodaposuchid also found in the fossil site of Lo Hueco.

中文翻译:

晚白垩世基底优世古猿Agaresuchus fontisensis(昆卡,西班牙)的神经解剖和神经感觉分析

Agaresuchus fontisensis是来自Lo Hueco(昆卡,西班牙)的Campanian-Maastrichtian(晚白垩世)的一条鳄鱼。Allodaposuchidae是欧洲基类Eusuchians的进化枝,被认为是Crocodylia茎组的一部分。用计算机断层摄影术扫描姬松鹤的全型和型头骨,并对其内腔(包括大脑,神经和血管的内腔)以及鼓室副窦系统和鼻旁窦进行数字重建。然后将颅内腔和气道鼻窦与其他鳄鱼形鼻腔鼻窦和气动鼻窦相比较。姬松茸的神经解剖与其他中古鳄鱼类似,与现存的鳄鱼具有某些形态特征。从姬蛇Agaresuchus fontisensis)的颅骨内腔重建中推断出的神经感觉和认知能力与其他欧洲人类似。按照鳄鱼标准,姬松茸的嗅觉敏锐度低,接近于鳄鱼类而非嗅觉类。它的视敏度与Lohuecosuchus megadontos(在Hu Hueco的化石场中也发现的同胞异足类蜥蜴)相似。
更新日期:2020-01-30
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