Mammals
Mammalia
Mammals are any vertebrates within the class Mammalia (/məˈmeɪliə/ from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands. Females of all mammal species nurse their young with milk, secreted from the mammary glands.
2 branches of this class, most-observed first · about 6,691 known species
See this branch on the Wheel of Life →
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the old herbals & bestiaries
History of Animals, Book II: On Oviparous Quadrupeds
Conrad Gessner · 1586 · p.731
History of Animals, Book II: On Oviparous Quadrupeds
Conrad Gessner · 1586 · p.269
Introductory Book
Michael Scot · 1350 · p.234
Ortus sanitatis
1491 · p.693
Ulyssis Aldrovandi ... serpentum et draconum historiae libri duo
Ambrosini, Bartolommeo · 1640 · p.311
Ortus sanitatis
1491 · p.553
Garden of Health (Hortus Sanitatis)
Jacob Meydenbach · 1491 · p.630
Garden of Health (Hortus Sanitatis)
Jacob Meydenbach · 1491 · p.651
Garden of Health (Hortus Sanitatis)
Jacob Meydenbach · 1491 · p.615
Serpentum et Draconum Historiae
Ulisse Aldrovandi · 1640 · p.317
History of Serpents and Dragons
Ulisse Aldrovandi · 1640 · p.309
In the stacks
Searching the stacks…
Every page naming Mammalia in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 40151.