Results 71 to 80 of about 4,213 (175)

Shifting Dietary Ecologies of Early Ungulates Across the Paleocene–Eocene Thermal Maximum in the Bighorn Basin, Wyoming

Ecology and Evolution, Volume 16, Issue 11, November 2026.
Understanding the interplay between climate change and ecology is crucial when attempting to reconstruct the evolutionary history of species. Here we use dental microwear texture analysis to infer the foraging ecologies of three lineages of early ungulates across the Paleocene–Eocene Thermal Maximum. We recovered differences in foraging guilds and only
Andrew Schwartz, Larisa R. G. DeSantis, Rob S. Scott   +2 more
wiley   +1 more source

Chromosome Evolution in Amniote Vertebrates: A Comprehensive Atlas of Karyotypic Diversity From Ancestral States to Rapid Turnover

Molecular Ecology, Volume 35, Issue 21, November 2026.
ABSTRACT The evolution of the amniote genome is characterized by a striking dichotomy between extreme karyotypic stasis and rapid structural innovation. To identify the mechanisms governing this variation, we provide a comprehensive synthesis of chromosome number and karyotype data across non‐avian reptiles, birds and mammals, integrating a century of ...
Martin Knytl, Tiago Marafiga Degrandi, Dmitry Prokopov, Vladimir Trifonov, Lívia do Vale Martins, Francisco de Menezes Cavalcante Sassi, Marcelo Ricardo Vicari, Marcelo de Bello Cioffi, Marcello Mezzasalma   +8 more
wiley   +1 more source

Supplemental Material for 'Total evidence phylogenetic analysis supports new morphological synapomorphies for Bovidae (Mammalia, Artiodactyla). (American Museum novitates, no. 3970)'

, 2021
Supplemental Material for 'Total evidence phylogenetic analysis supports new morphological synapomorphies for Bovidae (Mammalia, Artiodactyla). (American Museum novitates, no. 3970)
Calamari, Zachary T., Zachary T. Calamari   +1 more
core   +1 more source

Humans are not unique: difficult birth is common in placental mammals

Biological Reviews, Volume 101, Issue 5, Page 2214-2239, October 2026.
ABSTRACT Human childbirth is widely presumed to be uniquely difficult and dangerous compared to birth in other mammals. Tight fetopelvic proportions can result in obstructed labour and contribute to high rates of maternal and neonatal mortality. Ideas summarised under the ‘obstetrical dilemma’ have contributed to this assumption by explaining difficult
Nicole D. S. Grunstra
wiley   +1 more source

On the origin of the order Artiodactyla. [PDF]

Proceedings of the National Academy of Sciences, 1996
The first known members of the order Artiodactyla appeared suddenly throughout the Holarctic region at the beginning of the Eocene. They are characterized by distinctive cursorial skeletal specializations. Owing to their abrupt appearance and the lack of transitional forms, the origin of the order is problematic.
openaire   +2 more sources

Fig. 1 in Beatragus hunteri (Artiodactyla: Bovidae)

, 2017
Fig. 1.—An adult female Beatragus hunteri from the Ishaqbini Conservancy in Ijara, Kenya, August 2012. Used with permission of photographer A. H. Ali.Published as part of Ruso, Gabrielle E, 2017, Beatragus hunteri (Artiodactyla: Bovidae), pp.
Ruso, Gabrielle E
core   +1 more source

Postcranial anatomy of the Miocene hippopotamoids of Toros‐Menalla, Chad

Journal of Anatomy, Volume 249, Issue 4, Page 924-949, October 2026.
We establish a framework for the identification of postcranial remains in hippopotamoids by describing and comparing for the first time two late Miocene hippopotamoids from Toros‐Menalla, Chad (Hexaprotodon garyam, an early hippopotamid, and Libycosaurus bahri, the last African anthracothere) with the common hippopotamus.
Lorenzo Scribano, Fabrice Lihoreau, Alexandra Houssaye, Clarisse Nekoulnang Djetounako, Jean‐Renaud Boisserie   +4 more
wiley   +1 more source

Fetal and early post-natal mineralization of the tympanic bulla in fin whales may reveal a Hitherto undiscovered evolutionary trait. [PDF]

PLoS ONE, 2012
The evolution of the cetacean skeleton followed a path that differentiated this group from other terrestrial mammals about 50 million years ago [1], and debate is still going on about the relationships between Cetacea and Artiodactyla [2], [3], [4]. Some
Bruno Cozzi, Michela Podestà, Sandro Mazzariol, Alessandro Zotti   +3 more
doaj   +1 more source

Giraffidae (Mammalia, Artiodactyla) from the late Miocene of Akkaşdağı, Turkey

, 2005
FIG. 4. — Helladotherium sp., Akkaşdağı, Turkey, distal articulation of radius AK7-64. Scale bar: 2 cm.Published as part of Kostopoulos, Dimitris S. & Saraç, Gercek, 2005, Giraffidae (Mammalia, Artiodactyla) from the late Miocene of Akkaşdağı, Turkey, pp.
Kostopoulos, Dimitris S., Saraç, Gercek
core   +1 more source

Reproductive Biology and Growth Patterns of Pontoporia blainvillei (Artiodactyla, Pontoporiidae) From Santa Catarina State, Southern Brazil

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT This study evaluated reproductive parameters and growth patterns of male and female franciscana dolphins, Pontoporia blainvillei, in Santa Catarina State, southern Brazil, between Franciscana Management Area (FMA) II and III. We analyzed ovarian and testicular characteristics, counted the tooth growth layer groups, and constructed growth ...
E. Cordeiro, R. L. Paitach, V. R. M. Conversani, G. Rogge‐Renner, P. V. Castilho, M. J. Cremer   +5 more
wiley   +1 more source