Results 81 to 90 of about 1,804 (199)

New data on the sarcopterygian Koharalepis jarviki (Tetrapodomorpha; Canowindridae) from the Late Devonian of Antarctica, revealed via synchrotron and neutron tomography

open access: yesFrontiers in Ecology and Evolution
IntroductionThe ‘osteolepiforms’ are an extinct order of lobe-finned fishes that had a cosmopolitan distribution, which are often considered for their proximity to the vertebrate water-to-land transition.
Corinne L. Mensforth   +3 more
doaj   +1 more source

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

open access: yesThe Anatomical Record, Volume 309, Issue 10, Page 2541-2559, October 2026.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen   +7 more
wiley   +1 more source

Endocast of the osseous labyrinth of Conchoraptor gracilis (IGM 100/3006) in (A), lateral and (B), rostral views.

open access: yes, 2014
Endocast of the osseous labyrinth of Conchoraptor gracilis (IGM 100/3006) in (A), lateral and (B), rostral views.
Mark A. Norell (258792)   +2 more
core   +1 more source

Visualizing brain size evolution in platyrrhine monkeys: a skull reconstruction, endocast extrapolation, and volume comparison of Cebupithecia sarmientoi [PDF]

open access: yes, 2023
In 2018, at the paleontological site La Venta, Colombia, the first complete monkey skull from the Middle Miocene epoch (11-13 MYA) was recovered. Paleontologists identified the skull as Cebupithecia sarmientoi, an extinct species of platyrrhine monkey ...
Armstrong-Davies, Lilas
core   +1 more source

Synchrotron microtomography of a Nothosaurus marchicus skull informs on nothosaurian physiology and neurosensory adaptations in early Sauropterygia.

open access: yesPLoS ONE, 2018
Nothosaurs form a subclade of the secondarily marine Sauropterygia that was well represented in late Early to early Late Triassic marine ecosystems. Here we present and discuss the internal skull anatomy of the small piscivorous nothosaur Nothosaurus ...
Dennis F A E Voeten   +3 more
doaj   +1 more source

Braincase With Natural Endocast of a Juvenile Rhinocerotinae From the Late Middle Pleistocene Site of Melpignano (Apulia, Southern Italy)

open access: yesFrontiers in Earth Science, 2020
Cranial remains of juvenile fossil rhinoceroses are rarely described in literature and very few is known about the ontogenetic development of their inner anatomy.
Dawid A. Iurino   +5 more
doaj   +1 more source

A perspective from the Mesozoic: Evolutionary changes of the mammalian skull and their influence on feeding efficiency and high‐frequency hearing

open access: yesThe Anatomical Record, Volume 309, Issue 9, Page 2315-2330, September 2026.
Abstract The complex evolutionary history behind modern mammalian chewing performance and hearing function is a result of several changes in the entire skeletomuscular system of the skull and lower jaw. Lately, exciting multifunctional 3D analytical methods and kinematic simulations of feeding functions in both modern and fossil mammals and their ...
Julia A. Schultz
wiley   +1 more source

Brain-endocast spatial relationship in Neoceratodus, left lateral view.

open access: yes, 2015
A, brain; B, endocast; C, overlay; D, distance map
Robin Strand (732612)   +3 more
core   +1 more source

3D anatomical atlas of the heads of male and female adult Chamaeleo calyptratus

open access: yesThe Anatomical Record, Volume 309, Issue 8, Page 1937-1969, August 2026.
The veiled chameleon is a model organism in reptile development research. Utilizing contrast‐enhanced microCT and deep learning segmentation models, we have generated the first digital atlases of the skull, nervous system, cranial muscles and hyolingual muscles.
Alice Leavey   +3 more
wiley   +1 more source

A Virtual Phytosaur Endocast and its Implications for Sensory System Evolution in Archosaurs

open access: yes, 2013
Many recent studies have detailed the morphology of archosaurian endocrania. However, the outgroup to Archosauria, Phytosauria, has yet to be studied with modern techniques that would allow reconstruction of their internal anatomy.
Holloway, Waymon L.   +2 more
core  

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