Results 71 to 80 of about 1,308 (184)

The evolution of crocodilian nesting ecology and behavior

Ecology and Evolution, 2020
Crocodilians comprise an ancient and successful lineage of archosaurs that repeatedly raises questions on how they survived a mass extinction and remained relatively unchanged for ~100 million years.
Christopher M. Murray, Brian I. Crother, J. Sean Doody   +2 more
doaj   +1 more source

Phylogenetically‐Informed Crayfish Conservation in the Face of Climate Change

Animal Conservation, EarlyView.
Crayfish are a vital part of freshwater ecosystems, yet one third of assessed species are threatened with extinction, and almost 90% are highly sensitive to climate change. In this study, we produced a phylogenetically‐informed species prioritisation for crayfish conservation and explored the impacts of projected climate change scenarios on crayfish ...
Sebastian Pipins, Monika Böhm, Lucie Bland, Keith A. Crandall, Md Anwar Hossain, James Rosindell, Rikki Gumbs   +6 more
wiley   +1 more source

Crocodilian Forebrain: Evolution and Development [PDF]

Integrative and Comparative Biology, 2015
Organization and development of the forebrain in crocodilians are reviewed. In juvenile Caiman crocodilus, the following features were examined: identification and classification of dorsal thalamic nuclei and their respective connections with the telencephalon, presence of local circuit neurons in the dorsal thalamic nuclei, telencephalic projections ...
openaire   +2 more sources

Size, not phylogeny, explains the morphology of the endosseous labyrinth in the crown clade Crocodylia

Journal of Anatomy, Volume 246, Issue 4, Page 558-574, April 2025.
Here, we present the most complete dataset to date on the endosseous labyrinths of extant crocodylians. Using 3D geometric morphometrics, we show that allometry constitutes a major contributor of the shape variation of the crocodylian endosseous labyrinths and that the development of this structure is likely linked to the braincase conformation, in all
Yohan Pochat‐Cottilloux, Gwendal Perrichon, Lionel Hautier, Nicolas Rinder, Romain Amiot, Irena Raselli, Jérôme Adrien, Joël Lachambre, Vincent Fernandez, Jeremy E. Martin   +9 more
wiley   +1 more source

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

Shifts in type 2 vomeronasal receptor expression during postnatal development in the lungfish olfactory organ

Journal of Anatomy, EarlyView.
Lungfish possess a lamellar OE and a primitive VNO called as a recess epithelium (RecE). Among the lungfish V2Rs expressed in both the lamellar OE and the RecE in small individuals, some became restricted to the RecE in large individuals. These results suggest functional separation between the lamellar OE and the RecE is still incomplete in juveniles ...
Shoko Nakamuta, Zicong Zhang, Masato Nikaido, Takuya Yokoyama, Yoshio Yamamoto, Nobuaki Nakamuta   +5 more
wiley   +1 more source

Conquering the crush: A novel tool for holding crocodilian jaws open

Wildlife Society Bulletin
Crocodilians have diverse snout shapes ranging from the long, narrow snouts of the Indian gharial (Gavialis gangeticus) to the broad snout of the American alligator (Alligator mississippiensis).
Miriam Boucher, Thomas R. Rainwater, Michael Stoner, Luis Sigler, Stefanie L. Whitmire, James T. Anderson   +5 more
doaj   +1 more source

Review and analysis of human and Mugger Crocodile conflict in Gujarat, India from 1960 to 2013

Journal of Threatened Taxa, 2017
Human-Crocodile conflict (HCC) occurs to varying degrees around the World, and with a number of crocodilian species (CrocBITE 2013).  The Mugger or Marsh Crocodile Crocodylus palustris found in Gujarat State is the crocodilian species responsible for ...
Raju Vyas, Colin Stevenson
doaj   +1 more source

A description of dental microanatomy and implantation geometry in Chamaeleonidae

Journal of Anatomy, EarlyView.
A reassessment of the dental histology in adult chamaeleons reveals the presence of periodontal ligament. Alongside alveolar bone and cementum, these tissues together constitute a compacted and remodelled tripartite periodontium. Our findings include the novel observation of plicidentine‐like protuberances of dentine within underlying bone.
Giles D. Sukkert, Ilaria Paparella, Michael R. Doschak, Aaron R. H. LeBlanc, Michael W. Caldwell   +4 more
wiley   +1 more source

Inside a duck‐billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia

The Anatomical Record, Volume 309, Issue 7, Page 1702-1712, July 2026.
Abstract Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post‐Carnian saurischians, it remains absent
Tito Aureliano, Aline M. Ghilardi, Jonatan Kaluza, Agustín G. Martinelli   +3 more
wiley   +1 more source