Ateleaspididae is a prehistoric jawless fish family in the class

Osteostraci The class Osteostraci (meaning "bony shells") is an extinct taxon of bony-armored jawless fish, termed "ostracoderms", that lived in what is now North America, Europe and Russia from the Middle Silurian to Late Devonian. Anatomically speaking, ...

.Sansom, R. S. (2009). "Phylogeny, classification and character polarity of the Osteostraci (Vertebrata)". Journal of Systematic Palaeontology 7: 95–11.

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Osteostraci Prehistoric jawless fish families {{Paleo-jawless-fish-stub