Echinoidea - Calycina - Diplopodiidae

Alternative combinations: Cyphosoma texanum, Diadema texanum

Belongs to Pseudodiadema according to W. B. Clark and M. W. Twitchell 1915

See also Gabb 1869

Sister taxa: Pseudodiadema emersoni, Pseudodiadema rotulare, Pseudodiadema seguini, Pseudodiadema silbinense

Ecology: slow-moving low-level epifaunal omnivore

Distribution: found only at Fredericksburg, near (Cretaceous of Texas)

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Specimen images are retrieved through the ePANDDA API.