Classification
Phylum: Brachiopoda
Class: Rhynchonellata
Order: Orthida
Family: Draboviidae (Havlicek, 1950)
Cincinnatian Genera: Pionodema
Geologic Range
Early Ordovician – Late Devonian
Common Paleoecology
Draboviidae is an extinct family of stationary epifaunal suspension feeders
Description of the Family
- Normally ventribiconvex, rectimarginate, multicostellate enteletoids with aditicules
- Ventral and dorsal interareas apsacline and anacline, respectively
- Ventral muscle scar suboval to subtriangular
- Dental plates divergent
- Dorsal interior with extensions of brachiophores plates commonly convergent forward onto median ridge
- Anterior muscle scars usually larger than posterior pair
Published Descriptions
Treatise on Invertebrate Paleontology, Part H, Vol. 3 (2000):
- Normally ventribiconvex, rectimarginate, multicostellate enteletoids with aditicules; ventral and dorsal interareas apsacline and anacline, respectively; ventral muscle scar suboval to subtriangular; dental plates divergent; dorsal interior with extensions of brachiophores plates commonly convergent forward onto median ridge; anterior muscle scars usually larger than posterior pair; fulcra plates present.
Pionodema
