Mollusca		ROSTROCONCHIA
Basal Mollusca		Conocardioida

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Conocardioida

Conchifera (Helcionelloida) |--Monoplacophora `--+--Diasoma | |--ROSTROCONCHIA | | |--RIBEIRIOIDA | | `--CONOCARDIOIDA | `--Bivalvia `--Cyrtosoma

Genera

Genera

Furongian (Late Cambrian) to Lopingian (Late Permian)

The following list of genera is from the Systema Naturae 2000 Rostroconchia page on Conocardioida

All photos are from LAB 3 Chapter 8: Phylum Molusca, Boardman et al, 1987

Genus Arceodomus
Stratigraphic range: Late Mississippian to Early Permian

Genus Bigalea
Stratigraphic range: Middle Devonian

Genus Bransonia
Stratigraphic range: Early Ordovician to Permian

Genus Conocardium
Stratigraphic range: Middle Devonian to Pennsylvanian

Genus Eopteria
Stratigraphic range: Early Ordovician

Genus Euchasma
Stratigraphic range: Early Ordovician

Genus Hippocardia
Stratigraphic range: Middle Ordovician to Pennsylvanian

Genus Mulceodens
Stratigraphic range: Middle Silurian to Late Silurian

Genus Pseudoconocardium
Stratigraphic range: Late Pennsylvanian

Genus Pseudotechnophorus
Stratigraphic range: Furongian