Results 31 to 40 of about 9,836 (187)

Salishicetus meadi, a new aetiocetid from the late Oligocene of Washington State and implications for feeding transitions in early mysticete evolution [PDF]

Royal Society Open Science, 2018
Living baleen whales, or Mysticeti, lack teeth and instead feed using keratinous baleen plates to sieve prey-laden water. This feeding strategy is profoundly different from that of their toothed ancestors, which processed prey using the differentiated ...
Carlos Mauricio Peredo, Nicholas D. Pyenson   +1 more
doaj   +1 more source

Sigmodontinos (Mammalia, Rodentia) pleistocenicos del sudoeste de la provincia de Buenos Aires (Argentina): aspectos sistematicos, paleozoogeograficos y paleoambientales

Estudios Geologicos, 1996
Se describen nuevos restos de sigmodontinos provenientes de la localidad Bajo San José (sudoeste de la provincia de Buenos Aires, Argentina), de Edad Ensenadense (Pleistoceno temprano-medio).
U. F. J. Pardiñas, C. Deschamps
doaj   +1 more source

Una nueva especie de Agriarctos (Ailuropodinae, Ursidae, Carnivora) en la localidad de Nombrevilla 2 (Zaragoza, España)

Estudios Geologicos, 2011
Una nueva especie de úrsido primitivo, Agriarctos beatrix procedente de la localidad de Nombrevilla 2 (Zaragoza, cuenca de Calatayud-Daroca) es descrita en este trabajo.
J. Abella, P. Montoya, J. Morales
doaj   +1 more source

A new diminutive fossil ziphiid from the deep-sea floor off northern Chile and some remarks on the body size evolution and palaeobiogeography of the beaked whales [PDF]

Acta Palaeontologica Polonica, 2023
The evolutionary history of the beaked whales (Ziphiidae), odontocetes nowadays adapted to deep diving, is well known thanks to a significant fossil record mainly from the deep ocean floors.
Giovanni Bianucci, Walter Sielfeld, Nicole A. Olguin, Guillermo Guzmán   +3 more
doaj   +1 more source

I. MAMMALIA.

Proceedings of the Zoological Society of London, 1887
(Uploaded by Plazi for the Bat Literature Project) No abstract provided.
openaire   +2 more sources

Trypanosoma (Euglenozoa: Kinetoplastea) infections in rodents, bats, and shrews along an elevation and disturbance gradient in Central Sulawesi, Indonesia

Records of the Australian Museum, 2023
Surveillance of wildlife pathogens is critically important to the conservation of species and human health. However, few species of wildlife in biodiverse countries like Indonesia, especially endemic species in intact ecosystems, have been screened for ...
Ahmad Mursyid, Anang S. Achmadi, Wilson Novarino, Heru Handika, Herjuno Ari Nugroho, Syahfitri Anita, Amy Louise Adams, Karen M. C. Rowe, Kevin C. Rowe   +8 more
doaj   +1 more source

Evaluating the utility of linear measurements to identify isolated tooth loci of extinct Hyracoidea [PDF]

Acta Palaeontologica Polonica
Serially homologous elements pose an identification problem in fragmentary records, particularly those of vertebrate fossils. Examples include individual vertebrae in the vertebral column and teeth in a tooth row.
NATASHA S. VITEK, PATRICIA M. PRINCEHOUSE   +1 more
doaj   +1 more source

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

Population dynamics of medium and large mammals in a West African gallery forest area and the potential effects of poaching

Journal of Threatened Taxa, 2017
Few studies are available on the population dynamics of medium and large mammals in gallery forests of the Sudan and Sahel regions of West Africa.  Line-transect studies of the abundance (estimated by KIA) of nine species of ungulates and three species ...
Emmanuel M. Hema, Yaya Ouattara, Mamadou Karama, Fabio Petrozzi, Massimiliano Di Vittorio, Wendengoudi Guenda, Luca Luiselli   +6 more
doaj   +1 more source

Working with laws, regularities and singularities in biology: The evolution of mammalian red blood cell size as a case study

The Anatomical Record, EarlyView.
Abstract Phylogenetic comparative methods have been used in recent literature to work with laws and test for regularities (evolutionary associations of quantitative features) and evolutionary singularities (features that evolved in a single taxon). We analyzed these uses epistemologically, taking the evolution of red‐blood‐cell mean corpuscular volume (
Jorge Cubo, Paul Aubier, Cassandra Cheyron, Isabelle Drouet   +3 more
wiley   +1 more source