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Artículo

A Jurassic pterosaur from Patagonia and the origin of the pterodactyloid neurocranium

Codorniú Dominguez, Laura SusanaIcon ; Paulina Carabajal, ArianaIcon ; Pol, DiegoIcon ; Unwin, David; Rauhut, Oliver Walter Mischa
Fecha de publicación: 05/2016
Editorial: Peer J Inc
Revista: PeerJ
ISSN: 2167-8359
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Meteorología y Ciencias Atmosféricas

Resumen

Pterosaurs are an extinct group of highly modified flying reptiles that thrived during the Mesozoic. This group has unique and remarkable skeletal adaptations to powered flight, including pneumatic bones and an elongate digit IV supporting a wingmembrane. Two major body plans have traditionally been recognized: the primitive, primarily long-tailed paraphyletic "rhamphorhynchoids" (preferably currently recognized as non-pterodactyloids) and the derived short-tailed pterodactyloids. These two groups differ considerably in their general anatomy and also exhibit a remarkably different neuroanatomy and inferred head posture, which has been linked to different lifestyles and behaviours and improved flying capabilities in these reptiles. Pterosaur neuroanatomy, is known from just a few three-dimensionally preserved braincases of non-pterodactyloids (as Rhamphorhynchidae) and pterodactyloids, between which there is a large morphological gap. Here we report on a new Jurassic pterosaur from Argentina, Allkaruen koi gen. et sp. nov., remains of which include a superbly preserved, uncrushed braincase that sheds light on the origins of the highly derived neuroanatomy of pterodactyloids and their close relatives. A mCT ray-generated virtual endocast shows that the new pterosaur exhibits a mosaic of plesiomorphic and derived traits of the inner ear and neuroanatomy that fills an important gap between those of non-monofenestratan breviquartossans (Rhamphorhynchidae) and derived pterodactyloids. These results suggest that, while modularity may play an important role at one anatomical level, at a finer level the evolution of structures within a module may follow a mosaic pattern. Copyright 2016 Codorniú et al.
Palabras clave: CaÑAdÓN Asfalto , Chubut , Middle Jurassic , Patagonia , Pterosauria
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/61051
DOI: https://dx.doi.org/10.7717/peerj.2311
URL: https://peerj.com/articles/2311/
Colecciones
Articulos(CCT - SAN LUIS)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SAN LUIS
Articulos(INIBIOMA)
Articulos de INST. DE INVEST.EN BIODIVERSIDAD Y MEDIOAMBIENTE
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Codorniú Dominguez, Laura Susana; Paulina Carabajal, Ariana; Pol, Diego; Unwin, David; Rauhut, Oliver Walter Mischa; A Jurassic pterosaur from Patagonia and the origin of the pterodactyloid neurocranium; Peer J Inc; PeerJ; 2016; 8; 5-2016; 1-22
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