Results 1 to 10 of about 3,218 (200)

The Ancestral Eutherian Karyotype Is Present in Xenarthra [PDF]

PLoS Genetics, 2006
Molecular studies have led recently to the proposal of a new super-ordinal arrangement of the 18 extant Eutherian orders. From the four proposed super-orders, Afrotheria and Xenarthra were considered the most basal. Chromosome-painting studies with human
Roscoe Stanyon, Marta Svartman, Gary Stone   +2 more
exaly   +8 more sources

Morphological and Imaging Characterization of the Eye and Adnexa of the Lesser Anteater (Tamandua tetradactyla). [PDF]

Anat Histol Embryol
ABSTRACT The southern tamandua (Tamandua tetradactyla) is a species vulnerable to environmental disturbances, largely due to increasing overlap between its natural habitat and anthropogenically modified landscapes. Detailed anatomical knowledge of the eye and orbital structures, supported by imaging and histological analyses, is essential to improve ...
Dos Santos ELS, Fernandes AV, Neto FAD, Muramoto C, Silva DN, Raposo AC, de Faria MMD, E Silva RDG, Estrela Lima A, da Silva ÉADAC, Oriá AP.   +10 more
europepmc   +2 more sources

From armadillos to sloths: Patterns and variations in xenarthran coronary anatomy. [PDF]

Anat Rec (Hoboken)
Abstract Species of the superorder Xenarthra play a vital ecological role in the Neotropics. Despite their evolutionary significance, anatomical studies on their coronary circulation remain scarce. This study investigated the coronary anatomy of 82 hearts from nine Xenarthra species across the Dasypodidae, Myrmecophagidae, and Bradypodidae.
Viotto-Souza W, Santos ALQ, Abidu-Figueiredo M, Silva TA, Silva RAB, de Souza-Junior P.   +5 more
europepmc   +2 more sources

Vector-Borne Agents in Species of Silky Anteater (Cyclopes Gray, 1821) from South America [PDF]

Pathogens
Cyclopes, the smallest of all known anteaters, has an insectivorous diet and is arboreal, rarely descending to the ground. There are scarce reports on diseases and pathogenic agents affecting this taxon.
Pedro Henrique Cotrin Rodrigues, João Paulo Soares Alves, Flávia Regina Miranda, Cesar Rojano, Júlia Angélica Gonçalves Silveira   +4 more
doaj   +2 more sources

The cytological analysis of crossing over in armadillos supports the existence of a phylogenetic component of recombination rates in mammals. [PDF]

PLoS ONE
In mammals rates of recombination are well predicted by the phylogenetic relationship between species, with lower recombination rates in more basal clades.
Luis Francisco Rossi, María Inés Pigozzi   +1 more
doaj   +2 more sources

Virtual brain endocasts of the palaeanodont Metacheiromys marshi and the neurosensory evolution of early Pholidotamorpha. [PDF]

J Anat
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 ...
Cabasés Bru E, Moya-Costa R, Wible JR, Brusatte SL, Bertrand OC.   +4 more
europepmc   +2 more sources

Hoffmann's two-toed sloth I: Complete myology in the thoracic limb of Choloepus (Pilosa: Xenarthra). [PDF]

J Anat
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.
Tucker CS, Mossor AM, Avey-Arroyo JA, Butcher MT.   +3 more
europepmc   +2 more sources

Morphological, Histochemical and Immunohistochemical Characterisation of the Penis in Free-Ranging Giant Anteaters (Myrmecophaga tridactyla). [PDF]

Anat Histol Embryol
ABSTRACT The giant anteater (Myrmecophaga tridactyla) belongs to the superorder Xenarthra and is distributed throughout Central and South America. This animal is listed as ‘vulnerable’ on the International Union for Conservation of Nature's Red List of Threatened Species.
de Moura FBC, Môra VGS, Faraldo NC, de Camargo GC, Teixeira CR, de Toledo Rodovalho MV, Watanabe TTN, Murillo DFB, Rocha NS, Fonseca-Alves CE.   +9 more
europepmc   +2 more sources

Hoffmann's two-toed sloth II: Muscle architectural properties in the thoracic limb of Choloepus (Pilosa: Xenarthra). [PDF]

J Anat
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
Tucker CS, Mossor AM, Spainhower KB, Avey-Arroyo JA, Butcher MT.   +4 more
europepmc   +2 more sources

Micro-computed tomography indicates Eurotamandua, putative anteater from the Eocene of Messel, Germany, is related to pangolins, not xenarthrans [PDF]

Scientific Reports
Eurotamandua joresi, based on an articulated skeleton unearthed half a century ago at the middle Eocene Messel Pit near Darmstadt, Germany, was initially described as the oldest known anteater and the only member of mammalian clade Xenarthra from outside
Kenneth D. Rose, Renate Rabenstein, Jörg Habersetzer, Timothy J. Gaudin   +3 more
doaj   +2 more sources