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Angulotreta triangularis
Taxonomy
Angulotreta triangularis was named by Palmer (1954). Its type specimen is UT-32196f, a valve (pedicle), and it is a 3D body fossil. Its type locality is WC-751, which is in a Paibian marine limestone in the Riley Formation of Texas. It is the type species of Angulotreta.
Sister species lacking formal opinion data