The braincase and jaws of a Devonian 'acanthodian' and modern gnathostome origins

M. D. Brazeau

2009

Article

Nature 457:305-308

Find it at:

http://dx.doi.org/doi:10.1038/nature07436

Taxa discussed in this work:

• Parexus
• Parexus recurvus
• Promesacanthus
• Promesacanthus eppleri
• Pterichthyodes
• Ptomacanthus
• Ptomacanthus anglicus
• Rhamphodopsis

Taxonomy:

• Parexus recurvus belongs to Parexus - Agassiz (1845)
• Rhamphodopsis belongs to Ptyctodontida - Watson (1938)
• Pterichthyodes belongs to Antiarchi - Hemmings and Rostron (1972)
• Ptomacanthus anglicus belongs to Ptomacanthus - Miles (1973)
• Promesacanthus belongs to Acanthodii - Hanke (2008)
• Promesacanthus eppleri belongs to Promesacanthus - Hanke (2008)
• Parexus belongs to Acanthodii - Brazeau (2009)
• Ptomacanthus belongs to Chondrichthyes - Brazeau (2009)