Results 1 to 10 of about 28,383 (141)

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

A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spain: phylogenetic and paleobiological implications [PDF]

PeerJ, 2015
Background. The Late Cretaceous is a keystone period to understand the origin and early radiation of Crocodylia, the group containing all extant lineages of crocodilians.
Alejandro Blanco, Josep Fortuny, Alba Vicente, Àngel H. Luján, Jordi Alexis García-Marçà, Albert G. Sellés   +5 more
doaj   +7 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

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

Re-evaluation of the morphology and phylogeny of Diplocynodon levantinicum Huene & Nikoloff, 1963 and the stratigraphic age of the West Maritsa coal field (Upper Thrace Basin, Bulgaria) [PDF]

PeerJ, 2022
Diplocynodon levantinicum Huene & Nikoloff, 1963 was described based on few bone fragments from the West-Maritsa lignite basin of Central Bulgaria.
Tobias Massonne, Madelaine Böhme
doaj   +2 more sources

An expanded combined evidence approach to the Gavialis problem using geometric morphometric data from crocodylian braincases and Eustachian systems. [PDF]

PLoS ONE, 2014
The phylogenetic position of the Indian gharial (Gavialis gangeticus) is disputed--morphological characters place Gavialis as the sister to all other extant crocodylians, whereas molecular and combined analyses find Gavialis and the false gharial ...
Maria Eugenia Leone Gold, Christopher A Brochu, Mark A Norell   +2 more
doaj   +1 more source

A three-dimensional geometric morphometric analysis of the morphological transformation of Caiman lower jaw during post-hatching ontogeny [PDF]

PeerJ, 2023
Shape ontogenetic changes of the lower jaw in crocodylians are poorly understood. In order to answer some questions related to the inter- and intraspecific morphological variation of the mandible of two extant Caiman species, we performed a three ...
María Victoria Fernandez Blanco, Guillermo Hernán Cassini, Paula Bona   +2 more
doaj   +2 more sources