Atlantidosteus
# Atlantidosteus

Atlantidosteus is an extinct genus of homostiid arthrodire from the Early to Middle Devonian of Morocco and Queensland. It contains two known species, A. hollardi and A. pacifica.

## Description

Atlantidosteus pacifica is known from a right suborbital plate, found in the Broken River Group of Queensland, Australia.

## Phylogeny

Atlantidosteus is part of the clade Migmatocephala, closer related to Homostius, than Antineosteus.

The cladogram shown here is based on Young, 2003

