Scientists today announced the discovery of a new species of pterosaur from the Patagonia region of South America. The cranial remains were in an excellent state of preservation and belonged to a new species of pterosaur from the Early Jurassic. The researchers have named this new species 'Allkauren koi' from the native Tehuelche word 'all' for 'brain', and 'karuen' for 'ancient'.
Pterosaurs are an extinct group of flying reptiles that lived during most of the Mesozoic Era. This group had an extraordinary adaptation to flight, including pneumatic bones to lighten its weight, and an elongated digit supporting a wing membrane. However, pterosaur neuroanatomy is known from only a few three dimensionally preserved remains and, until now, there was no information on the intermediate forms. This study therefore provides new information on the origin, tempo and mode of evolution in this particular group of flying reptiles.
The fossil of Allkaruen koi was found in northern central Chubut Province, Patagonia Argentina and the remains included a superbly preserved and uncrushed braincase. In order to study the neurocranial anatomy, researchers used computed tomography to observe, in three dimensions, the cranial endocast and the inner ear. Subsequently, a comprehensive phylogenetic analysis of the group was performed, including these cranial data and other anatomical features. "Allkaruen, from the middle lower jurassic limit, shows an intermediate state in the brain evolution of pterosaurs and their adaptations to the aerial environment", said Dr Diego Pol, who is part of the research team. "As a result, this research makes an important contribution to the understanding of the evolution of all of pterosaurs."
Citation to the article: Codorniú L, Paulina Carabajal A, Pol D, Unwin D, Rauhut OWM. (2016) A Jurassic pterosaur from Patagonia and the origin of the pterodactyloid neurocranium. PeerJ 4:e2311 https://doi.org/10.7717/peerj.2311
PeerJ is an Open Access publisher of two peer-reviewed journals and a preprint server. PeerJ is based in San Diego, CA and the UK and can be accessed at https://peerj.com/. PeerJ's mission is to help the world efficiently publish its knowledge.
All works published in PeerJ are Open Access and published using a Creative Commons license (CC-BY 4.0). Everything is immediately available--to read, download, redistribute, include in databases and otherwise use--without cost to anyone, anywhere, subject only to the condition that the original authors and source are properly attributed.
PeerJ has an Editorial Board of over 1,400 respected academics, including 5 Nobel Laureates. PeerJ was the recipient of the 2013 ALPSP Award for Publishing Innovation.
PeerJ Media Resources (including logos) can be found at: https://peerj.com/about/press/
For the authors: Dr Diego Pol, email@example.com
Note: If you would like to join the PeerJ Press Release list, visit: http://bit.ly/PressList