Results 41 to 50 of about 5,548 (220)

Altitudinal range extension of the nine-banded armadillo, Dasypus novemcinctus (Linnaeus, 1758) (Mammalia, Xenarthra), in Irazú Volcano National Park, Costa Rica

open access: yesXenarthra
The nine-banded armadillo (Dasypus novemcinctus) is a widely distributed species throughout North and South America, however its distribution has been restricted by latitude and altitude due to cold temperatures.
Lloyd, Kevin J.   +5 more
doaj   +1 more source

Arthritis in a Glyptodont (Mammalia, Xenarthra, Cingulata)

open access: yesPLoS ONE, 2014
Arthritic lesions have been frequently diagnosed in the fossil record, with spondyloarthropathy (a type of erosive and pan-mammalian arthritis) being one of the most common types described to date for mammals, though not restricted to this group. Here, we identify spondyloarthropathy in fossil bones from the late Pleistocene in Brazil assignable to a ...
Fernando Henrique de Souza Barbosa   +3 more
openaire   +4 more sources

New mammalian and avian records from the late Eocene La Meseta and Submeseta formations of Seymour Island, Antarctica [PDF]

open access: yesPeerJ, 2020
The middle–late Eocene of Antarctica was characterized by dramatic change as the continent became isolated from the other southern landmasses and the Antarctic Circumpolar Current formed.
Sarah N. Davis   +7 more
doaj   +2 more sources

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto   +3 more
wiley   +1 more source

The Megafauna3D Educational Environment: Harnessing the Combination of New and Traditional Technologies to Improve Geoscience Education and Outreach

open access: yesGeosciences
The Megafauna3D project integrates advanced 3D scanning technologies and paleontological research to bring the extinct megafauna of Uruguay to formal and informal educational settings.
Luciano Varela   +4 more
doaj   +1 more source

Early history of mammals is elucidated with the ENCODE multiple species sequencing data. [PDF]

open access: yesPLoS Genetics, 2007
Understanding the early evolution of placental mammals is one of the most challenging issues in mammalian phylogeny. Here, we addressed this question by using the sequence data of the ENCODE consortium, which include 1% of mammalian genomes in 18 species
Sergey Nikolaev   +6 more
doaj   +1 more source

Hoffmann's two‐toed sloth II: Muscle architectural properties in the thoracic limb of Choloepus (Pilosa: Xenarthra)

open access: yesJournal of Anatomy, EarlyView.
Two‐toed sloths use their thoracic limbs for more frequent and greater suspensory support than three‐toed sloths and have muscle architectural properties consistent with stability of the pectoral girdle, enhanced flexor force/torque applied at the shoulder and elbow joints, and grip on the support as indicated by their myology. Abstract Two‐toed sloths
C. S. Tucker   +4 more
wiley   +1 more source

Hoffmann's two‐toed sloth I: Complete myology in the thoracic limb of Choloepus (Pilosa: Xenarthra)

open access: yesJournal of Anatomy, EarlyView.
Two‐toed sloths use their thoracic limbs for more frequent and prolonged suspensory support than three‐toed sloths and accordingly demonstrate myological traits consistent with stability of the pectoral girdle, enhanced flexor force/torque applied at the elbow joint, and grip on the support.
C. S. Tucker   +3 more
wiley   +1 more source

An Anatomical and Radiographic Study on the Vertebral Column of the Two-Toed Sloth (Choloepus hoffmanni)

open access: yesRevista Ciencias Veterinarias, 2021
The Choloepus Hoffmani is a mammal belonging to the Xenarthra superorder; xenarthrans are distributed from North to South America. It is common for these animals to require medical attention at wildlife rescue centers after being attacked by domestic ...
Maripaz Chinchilla-Barboza   +7 more
doaj   +1 more source

Virtual brain endocasts of the palaeanodont Metacheiromys marshi and the neurosensory evolution of early Pholidotamorpha

open access: yesJournal of Anatomy, EarlyView.
We describe the endocranial anatomy of Metacheiromys marshi. Decrease in olfaction and eye movement control occurred through time in Pholidotamorpha and is likely linked to fossorial adaptations. The development of the orbital gyrus might be related to the evolution of myrmecophagy and the emergence of a protrusile tongue in early Pholidotamorpha ...
Eduard Cabasés Bru   +4 more
wiley   +1 more source

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