Extinct genus of gastropods
Euthema is a fossil genus of minute land snails with an operculum, terrestrial gastropod molluscs in the family Diplommatinidae from the Cretaceous Burmese and Hkamti ambers.
Species.
As of 2021, 8 species are placed into "Euthema":
Etymology.
"Euthema truncatellina" is named after the extant genus "Truncatellina" (Stylommatophora), which has a similar shell, acknowledging the convergence in the different lineages of gastropods on land.
Description.
"Euthema annae" has a shell which is almost cylindrical with 6 weakly convex whorls, ribbed, with strong constriction. Aperture almost heart-shaped with parietal inclusion. Umbilicus narrow. Periumbilical keel weak. Height of shell tall and wide.
"E. myanmarica" has a shell which is almost cylindrical, comprising 6 moderately convex whorls, ribbed, with weak constriction. The aperture is oval and the umbilicus wide, with a strong periumbilical keel. The shells are and wide.
"E. truncatellina" has a shell which is almost cylindrical, comprising 6.5 moderately convex whorls, ribbed, with weak constriction. The aperture is circular, the umbilicus narrow, and the periumbilical keel is absent. The shells are and wide.
References.
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