Results 61 to 70 of about 611 (157)

The Role of Grass vs. Exogenous Abrasives in the Paleodietary Patterns of North American Ungulates

Frontiers in Ecology and Evolution, 2019
Equids have often been discussed regarding tooth morphological change due to the evolution of highly hypsodont teeth over time, the hyper-grazing habits of modern horses, and an older view that the acquisition of hypsodonty and the widespread appearance ...
Gina M. Semprebon, Florent Rivals, Florent Rivals, Florent Rivals, Christine M. Janis, Christine M. Janis   +5 more
doaj   +1 more source

The Impact of Food Properties on Jaw Movements in Rodents: A Comparison Between Myomorphous and Hystricomorphous Species

Journal of Morphology, Volume 287, Issue 8, August 2026.
We investigated the masticatory movements of two of the three main cranial‐mandibular morphological groups in Rodents (two species each) using 3D X‐ray reconstruction. We found that both groups use different movements and modulate their chewing differently in response to different food items.
Simon Sommerfeld, Lea Da Cunha, Lionel Hautier, Anthony Herrel   +3 more
wiley   +1 more source

Tooth Function of the Northern Raccoon (Procyon lotor) and Adaptations to Omnivory in the Order Carnivora

Journal of Morphology, Volume 287, Issue 7, July 2026.
The masticatory cycle of Procyon lotor was analysed and visualised, elucidating the occlusal relationships of its cheek dentition. Grinding and crushing were found to play a major role in the tooth function of P. lotor. An OFA analysis furthermore revealed an occlusal relationship between the M1 metaconule and the trigonid basin of the m2, indicating ...
Sophie E. Koomen, Andreas J. Lang, Thomas Martin   +2 more
wiley   +1 more source

Tooth wear and microwear of theropods from the Late Maastrichtian Marília Formation (Bauru Group), Minas Gerais State, Brazil [PDF]

Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 2015
ABSTRACTLittle is known about the tooth wear of South American theropod dinosaurs. This paper describes wear facets in Abelisauridae, Carcharodontosauridae and some indeterminate theropods teeth, from the Marília Formation. Four types of wear facets are proposed: vertically-oriented attritional striations; perpendicular attritional surfaces; oval wear ...
Carlos Roberto A. Candeiro, Philip J. Currie, Caio L. Candeiro, Lílian P. Bergqvist   +3 more
openaire   +1 more source

Dietary differences in archosaur and lepidosaur reptiles revealed by dental microwear textural analysis

Scientific Reports, 2019
Reptiles are key components of modern ecosystems, yet for many species detailed characterisations of their diets are lacking. Data currently used in dietary reconstructions are limited either to the last few meals or to proxy records of average diet over
Jordan Bestwick, David M. Unwin, Mark A. Purnell   +2 more
doaj   +1 more source

The Paleoenvironment of the Ndutu Bed at Olduvai Gorge in the Context of Middle Stone Age Expansion in Eastern Africa: A Multiproxy Approach to Ungulate Analyses From the Victoria Cabrera Site and Dorothy Garrod Site (MIS 5)

International Journal of Osteoarchaeology, Volume 36, Issue 4, Page 1100-1113, July/August 2026.
ABSTRACT The study of the Eastern African archaeological record is essential for understanding the origin and evolution of the Middle Stone Age (MSA). However, Olduvai Gorge, one of the primary regions in human evolution studies, has few sites associated with the MSA.
Juan Marín, Iván Ramírez‐Pedraza, David M. Martín‐Perea, Irene Solano‐Megías, Natalia Abellán‐Beltrán, Antonio Rodríguez‐Hidalgo, Agness Gidna, Audax Mabulla, José‐Manuel Maíllo‐Fernández   +8 more
wiley   +1 more source

Dietary proclivities of Paranthropus robustus from Swartkrans, South Africa

Anthropological Review, 2015
Pleistocene Paranthropus robustus fossils from Swartkrans have yielded stable isotope values suggesting some foraging on C4 plants possibly including underground storage organs. Dental microwear texture analysis on P.
L’Engle Williams Frank
doaj   +1 more source

Mosasaur Feeding Ecology from the Campanian Bearpaw Formation, Alberta, Canada: A Preliminary Multi-Proxy Approach

Diversity
Mosasaur taxa recovered from the Bearpaw Formation, Alberta, Canada, generally show exceptional preservation after rapid burial. Since the mosasaur community consisted of two dominant taxa, Mosasaurus missourensis Prognathodon overtoni, and three less ...
Femke M. Holwerda, Mark T. Mitchell, Madelon van de Kerk, Anne S. Schulp   +3 more
doaj   +1 more source

Opportunistic feeding strategy for the earliest old world hypsodont equids: evidence from stable isotope and dental wear proxies.

PLoS ONE, 2013
BackgroundThe equid Hippotherium primigenium, with moderately hypsodont cheek teeth, rapidly dispersed through Eurasia in the early late Miocene. This dispersal of hipparions into the Old World represents a major faunal event during the Neogene.
Thomas Tütken, Thomas M Kaiser, Torsten Vennemann, Gildas Merceron   +3 more
doaj   +1 more source

Fossil bears break free from inhibitory cascade constraints at least twice (Ursus minimus and Ursus deningeri) caused by dietary adaptations

Boreas, Volume 55, Issue 2, Page 503-516, April 2026.
Bears deviate from the inhibitory cascade model (ICM) during molar size evolution, with two significant deviations linked to changes in diet: Ursus minimus and Ursus deningeri. Many bears exhibit a ‘partial ICM’, highlighting the relationship between relative molar size, dietary adaptations and dental development across different species.
Anneke H. van Heteren, A. Stefanie Luft
wiley   +1 more source