Results 1 to 10 of about 26,830 (123)

Computed tomography reveals the endocranial anatomy of Crocodylia: Implications for phylogenetic relationships and ecomorphological convergence across Crocodylomorpha. [PDF]

J Anat
The evaluation of the endocranial anatomy of 43 crocodylian species reveals several differences, including variation in the curvature of the encephalic endocast, the size of the endosseous labyrinth and paratympanic sinuses, and the presence of additional snout sinuses.
Burke PMJ, Mannion PD.
europepmc   +2 more sources

Functional morphology and biomechanics of the locomotor apparatus in the large Late Triassic carnivore Postosuchus kirkpatricki (Archosauria: Rauisuchidae). [PDF]

J Anat
A three‐dimensional model is used to analyze the locomotor biomechanics of the large Late Triassic archosaurian reptile Postosuchus kirkpatricki. The study finds that it is more uncertain than previously concluded whether it was quadrupedal or bipedal, and plantigrade or digitigrade, but it clearly had locomotor specializations including large hindlimb
Hutchinson JR, Faughey E, Humpage M, Dupuis T, Demuth OE, Pintore R, Clarac F.   +6 more
europepmc   +2 more sources

Quadrate orientation and joint reaction force underwent correlated evolution during suchian evolution. [PDF]

J Anat
The quadrate is the cranial bone of the nonmammalian jaw joint. The quadrate has long been hypothesized to mirror the direction of joint reaction forces (JRF) during feeding. This study uses 3D biomechanical modeling to reveal a striking evolutionary link between quadrate orientation and JRF direction, unlocking new insights into the dynamic forces ...
Sellers KC, Wilken AT, Cranor CR, Middleton KM, Holliday CM.   +4 more
europepmc   +2 more sources

Structure and evolution of the embryonic cartilaginous skull of crocodilians [PDF]

Royal Society Open Science
The evolution of skull diversity in Crocodylia is rather well documented, but the developmental foundation of their cranial architecture remains poorly understood. Here, we present the first three-dimensional reconstruction of the embryonic cartilaginous
María Victoria Fernandez Blanco, Ingmar Werneburg   +1 more
doaj   +2 more sources

ReptTraits: a comprehensive dataset of ecological traits in reptiles [PDF]

Scientific Data
Trait datasets are increasingly being used in studies investigating eco-evolutionary theory and global conservation initiatives. Reptiles are emerging as a key group for studying these questions because their traits are crucial for understanding the ...
Oleksandra Oskyrko, Chunrong Mi, Shai Meiri, Weiguo Du   +3 more
doaj   +2 more sources

Phylogenetic analysis of a new morphological dataset elucidates the evolutionary history of Crocodylia and resolves the long-standing gharial problem [PDF]

PeerJ, 2021
First appearing in the latest Cretaceous, Crocodylia is a clade of semi-aquatic, predatory reptiles, defined by the last common ancestor of extant alligators, caimans, crocodiles, and gharials.
Jonathan P. Rio, Philip D. Mannion
doaj   +2 more sources

The effects of cryptic diversity on diversification dynamics analyses in Crocodylia [PDF]

Proceedings of the Royal Society B: Biological Sciences
Sebastian Hoehna, Gustavo Darlim
exaly   +2 more sources

Ocorrência da Icnoespécie Nihilichnus nihilicus Mikulás, Kadlecová, Fejfar & Dvorák (2006) em Vértebra de Crocodylia da Formação Solimões (Mioceno Superior da Bacia do Acre) [PDF]

Anuário do Instituto de Geociências, 2020
Os aspectos icnológicos relacionados a substrato ósseo da Formação Solimões (Mioceno superior da Bacia do Acre) ainda são pouco conhecidos. Um estudo tafonômico recente dos fósseis desta unidade disponíveis no acervo do Museu de Ciências da Terra da ...
Enrico Dalmas Baggio Di Gregorio, Hermínio Ismael de Araújo-Júnior   +1 more
doaj   +1 more source

‘Ear stones’ in crocodylians: a cross-species comparative and ontogenetic survey of otolith structures

Royal Society Open Science, 2022
The vestibular system of the inner ear is a crucial sensory organ, involved in the sensation of balance and equilibrium. It consists of three semicircular canals that sense angular rotations of the head and the vestibule that detects linear acceleration ...
Julia A. Schwab, Mark T. Young, Stig A. Walsh, Lawrence M. Witmer, Yanina Herrera, Zena L. Timmons, Ian B. Butler, Stephen L. Brusatte   +7 more
doaj   +1 more source

Controlled feeding experiments with juvenile alligators reveal microscopic dental wear texture patterns associated with hard-object feeding

Frontiers in Ecology and Evolution, 2022
Dental wear analyses are classically applied to mammals because they have evolved heterodont dentitions for sophisticated mastication. Recently, several studies have shown a correlation between pre-assigned and analytically inferred diet preferences in ...
Daniela E. Winkler, Masaya Iijima, Masaya Iijima, Masaya Iijima, Richard W. Blob, Tai Kubo, Tai Kubo, Tai Kubo, Mugino O. Kubo   +8 more
doaj   +1 more source