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Common name: Chordates
Name derivation: “having a spine”
Number of Classes: 14
Number of Orders: 147
Number of Families: 1,157
Number of Genus: 10,804
Number of known Species: 74,220
Earliest Fossil Record: Cambrian 539 mya
Habitat: Marine, Terrestrial Frehwater, Brackish
Size Range: 0.5 mm to 30 m
Notes: Based on Catalogue of Life as of July 2024