Microdomatidae is an extinct family of fossil sea snails, marine gastropod mollusks in the superfamily Trochoidea.Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005) They were extant throughout Southeast Asia, Northern Europe, Venezuela, the United States, and Northern Mexico. Their fossil records span from the Early Devonian to the Early Triassic, approximately 411 to 251 million years ago.
Appearance The umbilicus of Microdomatidae snails was typically well-developed and often quite wide, forming a noticeable central depression or hollow on the underside of the shell. This feature helps distinguish them from some other fossil sea snails, where the umbilicus may be narrow or even absent.
Taxonomy This family consists of two following subfamilies: Microdomatinae Wenz, 1938 Decorospirinae Blodgett & Frýda, 1999
Genera Genera within the family Microdomatidae include:
Subfamily Microdomatinae:"Microdomatinae". Paleobiology Database. Retrieved 17 April 2010. Microdoma - type genus Limburgia
Subfamily Decorospirinae:
Decorospira - type genus Dongiovannia Dutrochus Roemeriella
These subfamilies can be distinguished
References
Paleobiology Database info