Английская Википедия:Euthema

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Шаблон:Short description Шаблон:Automatic taxobox

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:[1]

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.[2]

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 Шаблон:Convert tall and Шаблон:Convert wide.[2][1]

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 Шаблон:Convert and Шаблон:Convert wide.[1]

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 Шаблон:Convert and Шаблон:Convert wide.[2][1]

References

Шаблон:Reflist

Links

Шаблон:Taxonbar


Шаблон:Diplommatinidae-stub