Class - Mammalia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Parvphylum: Osteichthyes
Megaclass: Tetrapoda
Class: Mammalia
Name derivation: “breast”
Subclass: Prototheria
- Order: Monotremata
Subclass: Theria
- Infraclass: Eutheria
- Order: Afrosoricida
- Order: Artiodactyla
- Order: Carnivora
- Order: Cetacea
- Order: Chiroptera
- Order: Cingulata
- Order: Dermoptera
- Order: Euliopotyphla
- Order: Hyracoidea
- Order: Lagomorpha
- Order: Macroscelidea
- Order: Perissodactyla
- Order: Pholidota
- Order: Pilosa
- Order: Primates
- Order: Proboscidea
- Order: Rodentia
- Order: Scandentia
- Order: Sirenia
- Order: Tubulidentata
- Infraclass: Metatheria
- Order: Dasyuromorphia
- Order: Didelphimorphia
- Order: Diprotodontia
- Order: Microbiotheria
- Order: Notoryctemorphia
- Order: Paucituberculata
- Order: Peramelemorphia
Family Count: 163
Genus Count: 1,326
Species Count: 6,235
Earliest Fossil Record: Late Triassic 225 mya
Habitat: Terrestrial, Marine, Freshwater
Size Range: 30 mm to 30 m
Notes: Based on Catalogue of Life as of March 2025
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