New Lower Ordovician stelleroids (Echinodermata) and their bearing on the origins and early history of the stelleroid echinoderms

D. B. Blake, and T. E. Guensburg

1993

Article

Journal of Paleontology 67(1):103-113

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Taxa discussed in this work:

• Cnemidactis macroadambulacralatas
• Ophioxenikos
• Ophioxenikos langenheimi
• Stibaraster
• Stibaraster ratcliffei

Taxonomy:

• Cnemidactis macroadambulacralatas belongs to Cnemidactis - Blake and Guensburg (1993)
• Goniactinida belongs to Somasteroidea - Blake and Guensburg (1993)