ammonites
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Procostatoria sexradiata Branson 1930 (clam)

Bivalvia - Costatoriidae

Alternative combinations: Costatoria sexradiata, Deltopecten sexradiata

Belongs to Procostatoria according to N. D. Newell and D.W. Boyd 1975

Sister taxa: Procostatoria cooperi, Procostatoria gloveri

Ecology: facultatively mobile infaunal suspension feeder

Average measurements (in mm): valve length 23.5