Euthema
| Euthema | |
|---|---|
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| Holotype specimen of Euthema hesoana | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Architaenioglossa |
| Superfamily: | Cyclophoroidea |
| Family: | Diplommatinidae |
| Genus: | †Euthema Yu, Wang & Pan, 2018[1] |
| Species | |
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See text | |
| Synonyms | |
| |
Euthema is a
Species
As of 2021, 8 species are placed into Euthema:[2]
- E. annae Balashov, 2020: though the final version of the paper was published and printed in February 2021.
- E. dilatata (Yu, 2020), originally described as Truncatellina dilatatus[2]
- E. hesoana Asato & Hirano in Hirano et al., 2019
- E. lophopleura (Bullis, Herhold, Czekanski-Moir, Grimaldi & Rundell, 2020), originally described in the new genus Xenostoma[2]
- E. myanmarica Balashov, 2021 - species from
- E. naggsi Yu, Wang & Pan, 2018, type species
- E. spelomphalos (Bullis, Herhold, Czekanski-Moir, Grimaldi & Rundell, 2020), originally described in the new genus Paleodiplommatina[2]
- E. truncatellina Balashov, Perkovsky & Vasilenko, 2020[7][8][9]
Etymology
Euthema truncatellina is named after the extant genus
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 2 mm (0.079 in) tall and 1–1.1 mm (0.039–0.043 in) wide.[3][2]
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 2 mm (0.079 in) and 0.9 mm (0.035 in) wide.[2]
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 1.7 mm (0.067 in) and 0.9 mm (0.035 in) wide.[3][2]
References
- ^ Yu, T.; Wang, B.; Pan, H. (2018). "New terrestrial gastropods from mid-Cretaceous Burmese amber". Cretaceous Research. 90: 254–258.
- ^ .
- ^ .
- ^ a b MolluscaBase - Euthema annae
- ^ ICZN - The Code Online
- ^ ZooBank - Euthema myanmarica
- PMID 33056238.
- ^ MolluscaBase - Euthema truncatellina
- ^ ZooBank - Euthema truncatellina
Links
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