Quadrate orientation and joint reaction force underwent correlated evolution during suchian evolution. [PDF]
J AnatThe 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 +4 more
europepmc +2 more sources
Clustering crocodylian dental morphology: Insights into functional adaptations, diet, and ontogeny. [PDF]
J AnatExtant crocodylians may be divided into five clusters based on the residuals of four linear dental measurements (y‐axes) and their variation along the jaw (x‐axes). These clusters correlate to snout shape, prey preference, and feeding ecology, particularly prey size and the degree of processing necessary. Multiple families and subfamilies were found in
Testin JJ, D'Amore DC.
europepmc +2 more sources
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 +7 more
doaj +1 more source
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 +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 +2 more
doaj +1 more source
Allodaposuchus palustris sp. nov. from the upper cretaceous of Fumanya (South-Eastern Pyrenees, Iberian Peninsula): systematics, palaeoecology and palaeobiogeography of the enigmatic allodaposuchian crocodylians. [PDF]
PLoS ONE, 2014 The controversial European genus Allodaposuchus is currently composed of two species (A. precedens, A. subjuniperus) and it has been traditionally considered a basal eusuchian clade of crocodylomorphs. In the present work, the new species A. palustris is
Alejandro Blanco +4 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 +2 more
doaj +2 more sources
Role of Chromosome Changes in Evolution and Diversity [PDF]
Genomics & Informatics, 2015 The karyotypes of most species of crocodilians were studied using conventional and molecular cytogenetics. These provided an important contribution of chromosomal rearrangements for the evolutionary processes of Crocodylia and Sauropsida (birds and ...
Kornsorn Srikulnath +2 more
doaj +1 more source
Строение и эволюция мозгового отдела черепа крокодилов (Archosauria: Crocodylia) [PDF]
, 2021 Современные крокодилы имеют мощный акинетичный череп с сильно модифицированной мозговой коробкой. В данной работе дается детальное описание нейрокраниальной остеологии современных крокодилов с комментариями об индивидуальном развитии отдельных скелетных ...
Кузьмин Иван Тимурович +1 more
core