e/List of prehistoric jawless fish

Information
has gloss	eng: This list of prehistoric jawless fish is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be jawless fish, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomina dubia), or were not formally published (nomina nuda), as well as junior synonyms of more established names, and genera that are no longer considered acanthodians. Modern forms are excluded from this list.
lexicalization	eng: List of prehistoric jawless fish
instance of	(noun) superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms Agnatha, superclass Agnatha

Media
media:img	Arandaspis prionotolepis.jpg
media:img	Astraspis desiderata.jpg
media:img	Birkenia elegans.jpg
media:img	Drepanaspis gemuendina.jpg
media:img	Hemicyclaspis.jpg
media:img	Jamoytius kerwoodi.jpg
media:img	Lepidaspis serrata e.JPG
media:img	Pituriaspis doylei.jpg
media:img	Sacabambaspis.jpg