| Euthema | |
|---|---|
 | |
| Holotype specimen of Euthema hesoana | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Architaenioglossa |
| Superfamily: | Cyclophoroidea |
| Family: | Diplommatinidae |
| Genus: | † Euthema Yu, Wang & Pan, 2018 [1] |
| Species | |
See text | |
| Synonyms | |
| |
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.
As of 2021, 8 species are placed into Euthema: [2]
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. [3]
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]
Spermodea lamellata is a species of minute European land snail, a terrestrial gastropod mollusc, or micromollusc, in the family Valloniidae.
Assimineidae is a family of minute snails, also known as palmleaf snails, with an operculum, gastropod mollusks or micromollusks in the superfamily Rissoidae. Many of these very small snails live in intermediate habitats, being amphibious between saltwater and land; others live in freshwater.
Diplommatinidae is a family of small land snails, also known as staircase snails, with an operculum, terrestrial gastropod mollusks in the superfamily Cyclophoroidea. The Cochlostomatinae Kobelt, 1902, were previously considered a subfamily of the Diplommatinidae, but are now known to be a separate family.
Cyclophoridae is a taxonomic family of small to large tropical land snails with an operculum, terrestrial gastropod mollusks in the order Architaenioglossa belonging to the subclass Caenogastropoda.
Lodderia eumorpha is a species of minute sea snail or micromollusc, a marine gastropod mollusc in the family Skeneidae.
Cernuella virgata, also known as Helicella virgata, common name, the "vineyard snail", is a species of small, air-breathing land snail, a pulmonate gastropod mollusc in the family Geomitridae.
Vitrea transsylvanica is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Pristilomatidae.
Lauria cylindracea, the common chrysalis snail, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Lauriidae.
Lozekia transsilvanica is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Hygromiidae, the hairy snails and their allies. This species is also known as Hygromia transsylvanica.
Abyssochrysos bicinctus is a species of sea snail, a marine gastropod mollusk in the family Abyssochrysidae.
Gulella streptostelopsis is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Streptaxidae.
Cantharidus antipodum is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Spectamen semireticulatum is a species of sea snail, a marine gastropod mollusc in the family Solariellidae.
Cantharidella picturata, common name the painted kelp shell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Boucardicus monchenkoi is a species of land snail with an operculum, a terrestrial gastropod mollusc in the family Cyclophoridae. This species is endemic to Madagascar, and occurs near Tôlanaro.
Boucardicus ambindaensis is a species of land snail with an operculum, a terrestrial gastropod mollusc in the family Cyclophoridae. This species is endemic to Madagascar, occurs in Tsingy Beanka reserve, around 50 km east of Maintirano city.
This list 2020 in paleomalacology is a list of new taxa of ammonites and other fossil cephalopods, as well as fossil gastropods, bivalves and other molluscs that are scheduled to be described during the year 2020, as well as other significant discoveries and events related to molluscan paleontology that are scheduled to occur in the year 2020.
Burmese amber is fossil resin dating to the early Late Cretaceous Cenomanian age recovered from deposits in the Hukawng Valley of northern Myanmar. It is known for being one of the most diverse Cretaceous age amber paleobiotas, containing rich arthropod fossils, along with uncommon vertebrate fossils and even rare marine inclusions. A mostly complete list of all taxa described up until 2018 can be found in Ross 2018; its supplement Ross 2019b covers most of 2019.
Eatoniella pullmitra is a species of marine gastropod mollusc in the family Eatoniellidae. First described by Winston Ponder in 1965, it is endemic to the waters of New Zealand. The species has a preference for living on algae found in the sublittoral zone.
Aegista catostoma is a species of air-breathing land snails, a terrestrial pulmonate gastropod in the family Camaenidae.
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