| Ptychalaea | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Superorder: | Eupulmonata |
| Order: | Stylommatophora |
| Family: | Gastrocoptidae |
| Genus: | † Ptychalaea Boettger, 1889 [1] |
Ptychalaea is a fossil genus of very small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Gastrocoptidae. [2] [3]
The type species of the genus is fossil Ptychalaea flexidens (Reuss, 1861) from Miocene of Europe. In 1920 the extant snails from Japan were placed into Ptychalaea - Nesopupa dedecora Pilsbry, 1902 and its form Nesopupa tamagonari Pilsbry, Hirase, 1904. Japanese species was established under the name Ptychalaea dedecora (Pilsbry, 1902). Although in 2018 it was shown that Nesopupa dedecora and its form Nesopupa tamagonari belong to genus Vertigo (Vertiginidae) and on this basis it was erroneously concluded by J.C. Nekola with coauthors that Ptychalaea is synonym of Vertigo . [4] Although in fact it only means that Nesopupa dedecora is not a species of Ptychalaea and there should be no consequence for taxonomic status of this genus. The type species of Ptychalaea, Ptychalaea flexidens from Miocene of Europe, is probably not related to extant Nesopupa dedecora from Japan. [2] [3]
Fossil species Ptychalaea mystica Stworzewicz & Pokryszko, 2015 from Eocene Baltic amber was also described in this genus. [5]
Vertigo is a genus of minute, air-breathing land snails, terrestrial pulmonate gastropod molluscs or micromollusks in the family Vertiginidae, the whorl snails.
Vertiginidae, common name the whorl snails, is a family of minute, air-breathing land snails, terrestrial pulmonate gastropod molluscs or micromollusks in the superfamily Pupilloidea.
Columella is a genus of very small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Truncatellinidae, the whorl snails and allies.
Pupilla is a genus of minute air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the family Pupillidae.
Nesopupa is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Nesopupinae of the family Vertiginidae.
Vertigo dedecora is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.
Sterkia is a genus of minute, air-breathing, land snails, terrestrial pulmonate gastropod mollusks which were formerly classified in the family Pupillidae now in the family Vertiginidae instead.
Camaenidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea, the typical snails and their allies. This is one of the most diverse families in the clade Stylommatophora.
The Baltic region is home to the largest known deposit of amber, called Baltic amber or succinite. It dates from 44 million years ago. It has been estimated that these forests created more than 100,000 tons of amber. Today, more than 90% of the world's amber comes from Kaliningrad Oblast of Russia. It is a major source of income for the region; the local Kaliningrad Amber Combine extracted 250 tonnes of it in 2014, 400 tonnes in 2015.
Vertigo antivertigo is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusc in the family Vertiginidae, the whorl snails.
Carychium is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Ellobiidae.
Vertigo parcedentata is a species of minute, air-breathing land snail, terrestrial pulmonate gastropod molluscs or micromollusks in the family Vertiginidae, the whorl snails.
Propupa is an extinct genus of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the superfamily Pupilloidea. Propupa hoffeinsorum is the only species in the genus Propupa, and was described from a fossil found in Baltic amber in 2006.
Blanfordia is a genus of terrestrial gastropod mollusks in the family Pomatiopsidae. They are land snails which have an operculum.
Gastrocoptidae is a family of minute, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the superfamily Pupilloidea.
Balticopta is a fossil genus of minute air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Gastrocoptidae from Eocene Baltic amber. It includes one species, B. gusakovi.
Afripupa is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Nesopupinae of the family Vertiginidae.