Results 71 to 80 of about 900 (200)

Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics [PDF]

, 2020
Northern South America and South East Asia are today’s hotspots of crocodylian diversity with up to six (mainly alligatorid) and four (mainly crocodylid) living species respectively, of which usually no more than two or three occur sympatrically.
Sánchez, R., Scheyer, T. M., Aguilera, Oscar Alberto, Quiroz, L., Fortier, D. C., Delfino, M., Carrillo Briceño, J. D., Carlini, Alfredo Armando, Sánchez Villagra, M. R.   +8 more
core  

Anatomy of spinal CSF loss in the American alligator (Alligator mississippiensis)

Journal of Anatomy, Volume 246, Issue 4, Page 575-584, April 2025.
India ink introduced into the cranial cerebrospinal fluid (CSF) compartment of Alligator diffuses along the spinal cord and exits the spinal compartment using perineural flow, resulting in a prominent “ink cuff” forming at the base of the spinal nerve. In Alligator, the region of the ink cuff is drained by a small lymphatic vessel.
Hadyn DeLeeuw, Michael Cramberg, Matthew Dille, Emily Pick, Mary Thompson, Bruce A. Young   +5 more
wiley   +1 more source

First occurrences of Trionychidae (Testudines, Cryptodira) from the Miocene of Poland: Detailed cranial anatomy and biogeographic implications

Journal of Anatomy, EarlyView.
Fossil finds from three Middle Miocene sites in Poland reveal the northernmost known presence of trionychid turtles in Europe, tentatively identified as Trionyx cf. vindobonensis, suggesting a warmer climate that supported thermophilic species in Central Europe during this period. Abstract Modern trionychids (Testudines, Cryptodira) have a pan‐tropical
Yohan Pochat‐Cottilloux, Sergi López‐Torres, Milan Chroust, Georgios L. Georgalis, Marcin Górka, Mateusz Tałanda   +5 more
wiley   +1 more source

Late Miocene crocodylians from northeast Argentina: New approaches about the austral components of the Neogene South American crocodylian fauna [PDF]

, 2012
The richest and more explored regions concerning Miocene crocodylians in South America are the basins surrounding the areas of Urumaco (Venezuela), La Venta (Colombia), Acre (Northwest Brazil) and Paraná (Northeast Argentina).
Riff Goncalves, Douglas, Bona, Paula, Brandoni, Zulma Nelida   +2 more
core   +1 more source

Comparative endocranial anatomy in the crocodylians Leidyosuchus canadensis and Stangerochampsa mccabei from the upper Cretaceous of Alberta, Canada

Journal of Anatomy, EarlyView.
Leidyosuchus canadensis and Stangerochampsa mccabei share endocranial features such as posterior projection of a neurovascular canal in the maxilla and a paratympanic sinus system most similar to those of small‐bodied and young extant crocodylians, suggesting that these pedomorphic features may reflect the ancestral crocodylian condition.
G. Donzé, G. Perrichon, P. Vincent, F. Therrien, J. E. Martin   +4 more
wiley   +1 more source

Endocranial anatomy of the earliest Cretaceous European neosuchian crocodyliform Pholidosaurus purbeckensis provides new evidence for the ecological evolution of Pholidosauridae

Journal of Anatomy, EarlyView.
We present new insights into the internal cranial anatomy of the neosuchian crocodyliform Pholidosaurus purbeckensis, based on CT‐scan data of material from the lowermost Cretaceous Purbeck Limestone Group, southern UK. From the study of the endocast, we obtained new information on the phylogeny and the ecological evolution of the Family ...
Leonardo Barbini, Paul M. J. Burke, Ilaria Caddeo, Marco Romano, Philip D. Mannion   +4 more
wiley   +1 more source

Computed tomography reveals multiple origins of extreme caudal vertebral pneumaticity in sauropod dinosaurs

Journal of Anatomy, EarlyView.
Here, we present novel CT scan data of caudal vertebrae of six Middle–Late Jurassic sauropods, representing several eusauropod lineages. We synthesise these new data with a comprehensive critical appraisal of purported external and internal evidence for caudal vertebral PSP in Sauropodomorpha.
Samantha L. Beeston, Daniela Schwarz, Paul Upchurch, Stephen F. Poropat, Patrick Asbach, Philip D. Mannion   +5 more
wiley   +1 more source

Estimating Total Length of Partially Submerged Crocodylians from Drone Imagery

Drones
Understanding the demographic structure is vital for wildlife research and conservation. For crocodylians, accurately estimating total length and demographic class usually necessitates close observation or capture, often of partially immersed individuals,
Clément Aubert, Gilles Le Moguédec, Alvaro Velasco, Xander Combrink, Jeffrey W. Lang, Phoebe Griffith, Gualberto Pacheco-Sierra, Etiam Pérez, Pierre Charruau, Francisco Villamarín, Igor J. Roberto, Boris Marioni, Joseph E. Colbert, Asghar Mobaraki, Allan R. Woodward, Ruchira Somaweera, Marisa Tellez, Matthew Brien, Matthew H. Shirley   +18 more
doaj   +1 more source

Giant extinct caiman breaks constraint on the axial skeleton of extant crocodylians

eLife, 2019
The number of precaudal vertebrae in all extant crocodylians is remarkably conservative, with nine cervicals, 15 dorsals and two sacrals, a pattern present also in their closest extinct relatives.
Torsten M Scheyer, John R Hutchinson, Olivier Strauss, Massimo Delfino, Jorge D Carrillo-Briceño, Rodolfo Sánchez, Marcelo R Sánchez-Villagra   +6 more
doaj   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

Biological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz, Maja Mielke, Stephan Handschuh, Anthony Herrel, Patrick Lemell, Léa Da Cunha, Nicolai Konow   +6 more
wiley   +1 more source