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Os mamíferos (do Mammalia) constituem uma Subclasse de vertebrados do domínio Eukaryota, do reino Animalia e filo Chordata, subdivididos em dois grupos: aquáticos (cetáceos, sirênios e pinípedes) e terrestres (quadrúpedes e bípedes), que se caracterizam pela presença de glândulas mamárias [ 1] que, nas fêmeas, produzem leite para a alimentação d...

Over 3 ⁄ 4 of mammal species are in the orders Rodentia (blue), Chiroptera (red), Soricomorpha (yellow) and Primates (green). Mammals can be divided in a number of orders: Monotremes (monotremata) Marsupials (marsupialia) Eutheria. Superorder Xenarthra. Order Pilosa; Order Cingulata; Superorder Afrotheria. Order Proboscidea ...

Mammal classification. Over 70% of mammal species are in the orders Rodentia (blue), Chiroptera (red) and Soricomorpha (yellow). Mammalia is a class of animal within the phylum Chordata. Mammal classification has been through several iterations since Carl Linnaeus initially defined the class.

List of mammal genera. There are currently 1,258 genera, 161 families, 27 orders, and around 5,937 recognized living species of mammal. [1] Mammalian taxonomy is in constant flux as many new species are described and recategorized within their respective genera and families. The taxonomy represented here is a compilation of the most ...

Scientists scanned the skulls of early mammal species dating back to 190–200 million years ago and compared the brain case shapes to earlier pre-mammal species; they found that the brain area involved in the sense of smell was the first to enlarge.