Results 51 to 60 of about 5,474 (205)

Resolution among major placental mammal interordinal relationships with genome data imply that speciation influenced their earliest radiations [PDF]

, 2010
Background: A number of the deeper divergences in the placental mammal tree are still inconclusively resolved despite extensive phylogenomic analyses.
Hallström, Björn M., Janke, Axel
core  

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

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

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

Molecular decay of the tooth gene Enamelin (ENAM) mirrors the loss of enamel in the fossil record of placental mammals. [PDF]

PLoS Genetics, 2009
Vestigial structures occur at both the anatomical and molecular levels, but studies documenting the co-occurrence of morphological degeneration in the fossil record and molecular decay in the genome are rare.
Robert W Meredith, John Gatesy, William J Murphy, Oliver A Ryder, Mark S Springer   +4 more
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

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

Craniogenetic studies in Sus scrofa: With emphasis on the ‘orbitosphenoid’ problem

The Anatomical Record, Volume 308, Issue 7, Page 1931-1943, July 2025.
Abstract The orbitosphenoid is a skeletal element of the endocranium of extant mammals. However, it has also been described in many of their fossil ancestors. Craniogenetic studies show that it is composed of two types of bone: first, the cartilaginous ala orbitalis and parts of the trabecular plate are transformed by endochondral ossification; second,
Wolfgang Maier, Ulla Lächele, Irina Ruf
wiley   +1 more source

Structural abnormalities in Paraguayan southern three-banded armadillos Tolypeutes matacus (Chlamyphoridae)

Xenarthra
Two structural abnormalities are reported in southern three-banded armadillos Tolypeutes matacus (Chlamyphoridae) from Paraguay. Additional reports of individuals with amputated legs are noted, and a potential explanation for the frequency of such ...
Paul Smith
doaj   +1 more source

Burdigalian deposits of the Santa Cruz Formation in the Sierra Baguales, Austral (Magallanes) Basin: Age, depositional environment and vertebrate fossils [PDF]

, 2013
Indexación: Web of Science; Scielo.ABSTRACT. A succession of marine and continental strata on the southern flank of Cerro Cono in the Sierra Baguales, northeast of Torres del Paine, can be correlated with stratigraphic units exposed along the southern ...
Bostelmann, J. Enrique, Carreño, Catalina, Fanning, C. Mark, Gutiérrez, Néstor M., Hervé, Francisco, Le Roux, Jacobus P, Llanos, Andrea, Otero, Rodrigo, Oyarzún, José Luis, Torres, Teresa, Vásquez, Ana   +10 more
core   +2 more sources