Xenarthran Nervous Systems
| Autor: | Jeffrey Padberg |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Anteater Neocortex biology Xenarthra Boreoeutheria Anatomy Sloth biology.organism_classification 03 medical and health sciences Basal (phylogenetics) 030104 developmental biology medicine.anatomical_structure Evolutionary biology biology.animal Cortex (anatomy) Armadillo medicine |
| DOI: | 10.1016/b978-0-12-804042-3.00053-1 |
| Popis: | Xenarthra is one of the basal placental superclades. Xenarthra is approximately 100 million years old and includes armadillos, anteaters, and sloths. Xenarthrans share unique features including supplementary intervertebral articulations, internal testes, and low metabolic rates. Xenarthran neocortex shares a common organizational plan with all other mammals, but in some species, the somatomotor arrangement is unique, possibly representing an evolutionary intermediate between marsupials (eg, opossums) and Boreoeutheria (eg, felines, primates). The cortical laminae of xenarthrans are not as defined as in other clades. In all xenarthrans examined, striking modular features in layer II of cortex occupy a great extent of neocortex. |
| Databáze: | OpenAIRE |
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