†subfamily Ptychodesmatinae Scarlato and Starobogatov 1984 (clam)

Bivalvia - Cyrtodontida - Cyrtodontidae

Alternative spelling: Ptychodesmatidae

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

See also Bouchet et al. 2010

Sister taxa: Cyrtodonta, Cyrtodontinae, Cyrtodontula, Daliella, Dickinsartella, Heikea, Macrodesma, Matheria, Ortonella, Pharcidoconcha, Sowteria, Thorslundia, Vanuxemia, Vigorniella, Warburgia, Yonginella

Subtaxa: Ptychodesma

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Ecology: facultatively mobile semi-infaunal suspension feeder

Distribution:

• Devonian of Brazil (1 collection), Ghana (1), United States (4: New York, Pennsylvannia)

Total: 6 collections each including a single occurrence

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