Results 51 to 60 of about 1,366 (173)

Evolutionary Implications of Dental Eruption in Dasypus (Xenarthra)

Journal of Mammalian Evolution, 2011
Late eruption of the permanent dentition was recently proposed as a shared anatomical feature of endemic African mammals (Afrotheria), with anecdotal reports indicating that it is also present in dasypodids (armadillos). In order to clarify this question, and address the possiblity that late eruption is shared by afrotherians and dasypodids, we ...
Ciancio, Martín Ricardo, Cordeiro de Castro, Mariela, Galliari, Fernando Carlos, Carlini, Alfredo Armando, Asher, Robert J.   +4 more
openaire   +3 more sources

Some natural history notes on Paraguayan armadillos (Xenarthra, Chlamyphoridae) Tolypeutes matacus and Euphractus sexcinctus

Xenarthra
We report on some novel natural history observations of southern three-banded armadillo Tolypeutes matacus and six-banded armadillo Euphractus sexcinctus from Paraguay. These are: 1) a new band anomaly for an adult of T.
Paul Smith, Rebecca L. Smith, Matthew T. Owen   +2 more
doaj   +1 more source

Chromosome painting in three-toed sloths: a cytogenetic signature and ancestral karyotype for Xenarthra

BMC Evolutionary Biology, 2012
Background Xenarthra (sloths, armadillos and anteaters) represent one of four currently recognized Eutherian mammal supraorders. Some phylogenomic studies point to the possibility of Xenarthra being at the base of the Eutherian tree, together or not with
Azevedo Nathália F, Svartman Marta, Manchester Andrea, de Moraes-Barros Nádia, Stanyon Roscoe, Vianna-Morgante Angela M   +5 more
doaj   +1 more source

Paleogene Glyptodontidae Propalaehoplophorinae (Mammalia, Xenarthra) in extra-Patagonian areas [PDF]

Andean Geology, 2015
Paleogene records of Cingulata Glyptodontidae are scarce. The only well described comes from the Paleogene of Argentine Patagonia. Two subfamilies have been reported for that period: Glyptatelinae and Propalaehoplophorinae. Until this contribution, the latter taxon was geographically restricted to the locality of El Pajarito (Late Oligocene, Deseadan ...
Alfredo E. Zurita, Laureano González Ruiz, Ángel R. Miño‐Boilini, Rafael Herbst, Gustavo J. Scillato‐Yané, Pedro Cuaranta   +5 more
openaire   +5 more sources

How is the third jaw joint in whales different? Diverse modes of articulation between the jaws of whales

Journal of Anatomy, Volume 247, Issue 6, Page 1224-1240, December 2025.
This study conducts the first comprehensive morphological investigation of the mandibular symphysis in whales. Using gross anatomical observation and CT cross‐sectional data, we describe diverse joint morphologies across 74 extant and fossil cetacean taxa. Toothed whales exhibit unfused, partially fused, or fully fused symphyses.
Rebecca J. Strauch, Nicholas D. Pyenson, Carlos Mauricio Peredo   +2 more
wiley   +1 more source

Genomic Signatures in Maned Three‐Toed Sloths From Ancient to Recent Environmental Changes in Brazil's Threatened Atlantic Forest

Molecular Ecology, Volume 34, Issue 23, December 2025.
ABSTRACT Environmental and climatic changes have shaped the evolutionary trajectories of natural populations, leaving genomic signatures that reflect how species respond to these shifts and their impacts on genetic health. While these insights are essential for unravelling evolutionary histories and informing conservation strategies, studies on ...
Larissa S. Arantes, Diego De Panis, Flávia R. Miranda, Fabrício R. Santos, Michael Hiller, Camila J. Mazzoni   +5 more
wiley   +1 more source

Variación no alométrica en el cráneo del perezoso bayo Bradypus variegatus (Schinz, 1825) (Mammalia, Pilosa, Bradypodidae)

Graellsia, 2019
El perezoso bayo Bradypus variegatus (Schinz, 1825) es un mamífero monomórfico, de ontogenia craneal poco conocida. En este estudio analizamos la alometría estática entre tamaño y forma, utilizando 21 especímenes diferentes de edades diversas.
P. M. Parés-Casanova
doaj   +1 more source

Effects of Landscape Characteristics on Abundance of Giant Anteaters in Intensively Farmed Areas

Biotropica, Volume 57, Issue 6, November 2025.
In this study, we analyzed the abundance of giant anteaters in 55 landscapes within a 34,000 km2 region that has undergone significant transformation due to intensive agricultural practices, particularly the cultivation of sugarcane. In each landscape, we used three camera traps to record the presence of this species. Our occupancy models revealed that
Samia C. dos Reis, Larissa L. Bailey, Adriano G. Chiarello   +2 more
wiley   +1 more source

When the giant rests: Evidence of prolonged inactivity in the giant armadillo (Priodontes maximus) of the Pantanal

Xenarthra
We documented prolonged inactivity (12 consecutive days), an uncommon behavior, in a giant armadillo (Priodontes maximus) in the Pantanal. Unlike previous observations in the Amazon, there was no internal activity or alternative exits, suggesting ...
Mattheus S. Firme, Gabriel F. Massocato, Arnaud L.J. Desbiez   +2 more
doaj   +1 more source

Micromamíferos del sitio Arroyo Seco 2 (provincia de Buenos Aires, Argentina). Sus implicaciones tafonómicas y paleoambientales

Estudios Geologicos, 1999
La secuencia del Pleistoceno tardío-Holoceno temprano en Arroyo Seco 2 es una de las más completas del registro de la Región Pampeana. Se distinguen cuatro unidades estratigráficas, tres de ellas contienen abundantes restos de pequeños mamíferos fósiles.
G. Gómez, J. L. Prado, M. T. Alberdi
doaj   +1 more source