Chordata

Phylum containing vertebrates and related invertebrates.

Chordata is a phylum within the subkingdom Metazoa containing over 60,000 species. It includes vertebrates like fish, amphibians, reptiles, birds, and mammals, as well as some invertebrate groups.

/ˈkɔːrdˌeɪtə/

The name 'Chordata' was coined by Georges Cuvier in 1812, derived from the Greek word 'chorde' meaning string or cord, referring to the notochord.

Chordata is a group of animals that includes all vertebrates like fish, birds, and mammals, plus some related invertebrates.

The notochord, present in embryos, is a flexible rod that supports the body
Some chordates, like sea squirts, have very simple adult forms
Lancelets are small marine invertebrates that closely resemble the early stages of vertebrate development

What defines a chordate:Chordates have a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail at some point in their development
What are some examples:Examples include fish, amphibians, reptiles, birds, and mammals
Are invertebrates included:Yes, some invertebrate species like tunicates and lancelets are also part of Chordata

Animalia

Mammalia Aves Reptilia Amphibia Pisces

notochord spinal cord pharyngeal slits

Metazoa

biological classification