Results 31 to 40 of about 349 (138)

Size, not phylogeny, explains the morphology of the endosseous labyrinth in the crown clade Crocodylia. [PDF]

J Anat
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
Pochat-Cottilloux Y, Perrichon G, Hautier L, Rinder N, Amiot R, Raselli I, Adrien J, Lachambre J, Fernandez V, Martin JE.   +9 more
europepmc   +2 more sources

Roars, Rumbles, and Resonance: A Systematic Review and Meta-Analysis of Crocodylian Acoustic Signals. [PDF]

Ecol Evol
Crocodylians are highly vocal reptiles, possessing a complex acoustic signalling system including vocal and non‐vocal signals used for courtship, mating, mediating conflict, and providing maternal care. Despite this, research on crocodylian acoustic signalling remains infrequent, with methodologies and terminology varying widely across studies.
Flores SA, Dwyer RG, Parsons S, Potvin DA.   +3 more
europepmc   +2 more sources

Ontogenetic variability of the intertympanic sinus distinguishes lineages within Crocodylia. [PDF]

J Anat, 2023
We recognised the usefulness of the paratympanic sinuses in distinguishing major lineages within Crocodylia. 3D geometric morphometric approaches allow us to quantify the ontogeny and variability of the intertympanic sinus within one of the largest dataset of modern species, including one of the largest specimens ever scanned at such a high resolution.
Perrichon G, Hautier L, Pochat-Cottilloux Y, Raselli I, Salaviale C, Dailh B, Rinder N, Fernandez V, Adrien J, Lachambre J, Martin JE.   +10 more
europepmc   +2 more sources

Clustering crocodylian dental morphology: Insights into functional adaptations, diet, and ontogeny. [PDF]

J Anat
Extant 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

Evolution of growth strategy in alligators and caimans informed by osteohistology of the late Eocene early-diverging alligatoroid crocodylian Diplocynodon hantoniensis. [PDF]

J Anat
Living alligatoroids (alligators and caimans) share osteohistological features and display similar overall growth rates. However, it is unclear if these shared patterns are the result of convergent responses or reflect an ancestral condition. In this study, we histologically sampled nine femora of the fossil alligatoroid Diplocynodon hantoniensis to ...
Hoffman DK, Goldsmith ER, Houssaye A, Maidment SCR, Felice RN, Mannion PD.   +5 more
europepmc   +2 more sources

Trifold origin of the reptilian ear ossicle and its relation to the evolutionary modification of the temporal skull region. [PDF]

J Anat
The columella‐complex in reptile middle ears involves the footplate, columella shaft, and extracolumella. The latter is partly of quadrate developmental origin, whereas the footplate derives from the mesodermal otic capsule, the shaft and another part of the extracolumella from the hyoid arch.
Werneburg I, Bronzati M.
europepmc   +2 more sources

Analyzing the Life History of Caimans: The Growth Dynamics of Caiman latirostris From an Osteohistological Approach. [PDF]

J Morphol
This research offers insights into the life history and growth dynamics of Caiman latirostris, highlighting their growth patterns, aging, and attainment of sexual maturity, and how environmental conditions impact their development. This study has direct implications for understanding the life histories of extinct archosaurs and other sauropsids ...
Pereyra ME, Bona P, Siroski P, Chinsamy A.   +3 more
europepmc   +2 more sources

Salting kinetics and salt diffusivities in farmed Pantanal caiman muscle [PDF]

Pesquisa Agropecuária Brasileira, 2003
The legal Pantanal caiman (Caiman crocodilus yacare) farming, in Brazil, has been stimulated and among meat preservation techniques the salting process is a relatively simple and low-cost method.
Vânia Regina Nicoletti Telis, Pedro Fernando Romanelli, Ana Lúcia Gabas, Javier Telis-Romero   +3 more
doaj   +1 more source

Assessing abundance-suitability models to prioritize conservation areas for the dwarf caimans in South America. [PDF]

Ecol Evol
This study identified conservation priorities for the South American dwarf caimans (Paleosuchus palpebrosus and P. trigonatus) relying on robust species distribution and abundance models. We support that environmental suitability and spatial abundance are not always congruent and cannot be considered reliable surrogates for one another, and ...
Rodriguez-Cordero AL, Balaguera-Reina SA, Gross BA, Munn M, Densmore LD.   +4 more
europepmc   +2 more sources

Evaluating growth in Macrospondylus bollensis (Crocodylomorpha, Teleosauroidea) in the Toarcian Posidonia Shale, Germany

Papers in Palaeontology, Volume 9, Issue 5, September/October 2023., 2023
Abstract The study of how organisms grow is a fundamental aspect of palaeontology. Growth in teleosauroids is poorly understood and little studied, especially in an ontogenetic sense. We investigate growth rates of the most common and abundant teleosauroid, Macrospondylus bollensis, in which a large sample of multiple body sizes is available from the ...
Michela M. Johnson, Eli Amson, Erin E. Maxwell   +2 more
wiley   +1 more source