Translingual

Wikispecies

Proper noun

Cephalaspidomorphi

1. A taxonomic class within the subphylum Vertebrata – jawless fish, all of which are extinct in most current classifications.

Usage notes

• In much of the 20th century this class included lampreys (Petromyzontidae).

Hypernyms

• (class): Eukaryota - superkingdom; Animalia - kingdom; Bilateria - subkingdom; Deuterostomia - infrakingdom; Chordata - phylum; Chordata Craniata - clade; Vertebrata - subphylum; Hyperoartia - clade

Hyponyms

• (class): †Atelaspidiformes, †Birkeniiformes, †Cephalaspidiformes, †Galeaspidiformes, †Pituriaspidiformes, †Tremataspidiformes - orders

See also

• †Anaspida
• †Galeaspida
• †Osteostraci
• †Pituriaspida