Bivalvia - Trigoniida - Schizodidae

Full reference: H. Chronic. 1952. Molluscan fauna from the Permian Kaibab Formation, Walnut Canyon, Arizona. Geological Society America Bulletin 63(2):95-166

Parent taxon: Eoastartidae according to N. D. Newell and D.W. Boyd 1975

Sister taxon: Eoastarte

Subtaxa: Kaibabella (Flattopia), Kaibabella basilica, Kaibabella boydi, Kaibabella curvilenata, Kaibabella ovata, Kaibabella schizodiiformis

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Ecology: facultatively mobile infaunal suspension feeder