Bivalvia - Cyrtodontida

Full reference: E. O. Ulrich. 1894. The Lower Silurian Lamellibranchiata of Minnesota. Minnesota Geology and Natural History Survey 3:475-628

Parent taxon: Cyrtodontoidea according to J. G. Carter et al. 2011

Sister taxa: none

Subtaxa: Cyrtodonta, Cyrtodontinae, Cyrtodontula, Dickinsartella, Heikea, Macrodesma, Matheria, Ortonella, Pharcidoconcha, Ptychodesma, Ptychodesmatinae, Thorslundia, Vanuxemia, Warburgia, Yonginella

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Ecology: facultatively mobile semi-infaunal suspension feeder