Callocystitidae
Classification
Phylum: Echinodermata
Class: Rhombifera
Order: Dichoporita
Family: Callocystitidae (Bernard, 1895)
Cincinnatian Genera: Lepadocystis
Geologic Range
Late Ordovician – Late Devonian
Common Paleoecology
Callocystitidae is an extinct family of stationary low-level epifaunal suspension feeders
Description of the Family
- Ovate, globular, biconvex, or ellipsoidal theca
- Relatively few rhombs
- Long ambulacra that extend over theca
- Column is present
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Treatise on Invertebrate Paleontology, Part S, Vol. 1(2) (1978):
Treatise on Invertebrate Paleontology, Part S, Vol. 1(2) (1978):
- Rhombiferan cystoids provided with distinct pectinirhombs; periproct relatively small, not produced; theca ovate, globular, biconvex, or ellipsoidal, not spindle-shaped or resembling a pentremitel; rhombs relatively few, rarely developed as demirhombs; ambulacra long, extending down over theca; column present.
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Lepadocystis
