Articulate brachiopods of the Viola Formation (Ordovician) in the Arbuckle Mountains, Oklahoma

L. P. Alberstadt

1973

Article

Oklahoma Geological Survey Bulletin 117:1-90

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Taxa discussed in this work:

• Glyptorthis glaseri
• Plaesiomys planus
• Plaesiomys proavitus

Taxonomy:

• Plaesiomys proavitus belongs to Plaesiomys - Alberstadt (1973)
• Plaesiomys planus belongs to Plaesiomys proavitus - Alberstadt (1973)