Holothuroidea - Dendrochirotida - Calclamnidae

Full reference: C. H. Summerson and L. J. Campbell. 1958. Holothurian Sclerites from the Kendrick Shale of Eastern Kentucky. Journal of Paleontology 32(5):961-969

Parent taxon: Calclamnidae according to D. L. Frizzell and H. Exline 1966

See also Deflandre-Rigaud 1962, Sepkoski 2002 and Summerson and Campbell 1958

Sister taxa: Calclamna, Calclamnella, Calclamninae, Calclamnoidea, Curvatella, Elgerius, Eocaudiniinae, Fissobractites, Gutschickia, Hamptonina, Harrisina, Hodsonina, Jolfacaudina, Mortensenites, Pachopsites, Paracucumarites, Parvioctoidus, Praecaudina, Thuroholia, Yorkshirella

Subtaxa: Petropegia radiata Petropegia spinosa

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Type: Petropegia radiata

Ecology: stationary epifaunal suspension feeder-detritivore

Distribution: found only at Cow Creek, Prestonsburg, Floyd County (Carboniferous of Kentucky)

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Specimen images are retrieved through the ePANDDA API.