|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Microcardinalia (Chiastodoca) richardsoni
Rhynchonellata - Pentamerida - Stricklandiidae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|J. Jin and P. Copper 2000||Large to very large, semicircular to subpentagonal, weakly biconvex shells of Microcardinalia (Chiastodoca) with chisel-like posterior. Shell surface smooth or irregular, rarely with faint criss-cross ribbing; hingeline and ventral interarea straight, nearly as wide as shell width.|