genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of small, mostly air-breathing,
freshwater snail
Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs ...
pulmonate
Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...
s in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ...
to the present. Fossils attributed to ''Gyraulus'' sp. have been found in the lakebottom sediments of the Yixian Formation in China, dating to 125 million years ago.Pan, H. and Zhu, X. (2007). "Early Cretaceous non-marine gastropods from the Xiazhuang Formation in North China." ''Cretaceous Research'', 28(2): 215-224.
The minute species '' Gyraulus crista'', although technically a pulmonate gastropod, does not use air for respiration, but instead has a mantle cavity which has much water.
Distribution
The distribution of this genus is
Holarctic
The Holarctic realm is a biogeographic realm that comprises the majority of habitats found throughout the continents in the Northern Hemisphere. It corresponds to the floristic Boreal Kingdom. It includes both the Nearctic zoogeographical region ...
.
Habitat
These snail snails live on water plants in freshwater.
Shell description
Shell of the species within this genus are small, and are mostly almost planispiral in their coiling.
Species
Species within the genus ''Gyraulus'' include:
subgenus '' Armiger'' W. Hartmann, 1843
* '' Gyraulus crista'' (Linnaeus, 1758) - Nautilus ramshorn
* † ''
Gyraulus cristaeformis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus geniculatus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Sandberger, 1875)
* † ''
Gyraulus gracilis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Gozhik & Prysjazhnjuk, 1978)
* † ''
Gyraulus lenapalus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Bourguignat, 1881)
* † ''
Gyraulus lluecai
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Royo Gómez, 1922)
* † ''
Gyraulus nautiliformis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Gozhik & Prysjazhnjuk, 1978)
* † ''
Gyraulus subptychophorus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus aegaeus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus bigueti
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Fontannes, 1881)
* † ''
Gyraulus brlici
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' Brusina, 1897
* † ''
Gyraulus brusinai
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Fauna Europaea Fauna Europaea is a database of the scientific names and distribution of all living multicellular European land and fresh-water animals. It serves as a standard taxonomic source for animal taxonomy within the Pan-European Species directories Infras ...
, last update 27 January 2011, accessed 1 May 2011.
* † '' Gyraulus connivens'' (Eichwald, 1830)
* † ''
Gyraulus constans
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus deflexus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Sandberger, 1859)
* † ''
Gyraulus dimitrovici
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus inornatus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus nusici
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus phacecercus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Brusina, 1902)
* ''
Gyraulus piscinarum
''Gyraulus piscinarum'' is a species of gastropods belonging to the family Planorbidae.
The species is found in Southeastern Europe (Bulgaria, Turkey) and Western Asia
Western Asia, West Asia, or Southwest Asia, is the westernmost subregion ...
Gyraulus stoppanii
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Sacco, 1886)
* ''
Gyraulus stroemi
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossi ...
'' (Westerlund, 1881)
* † ''
Gyraulus subverticillus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus virgatus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus clymene
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus laevis
''Gyraulus laevis'' is a small species of freshwater snail, an aquatic pulmonate gastropod mollusc in the family Planorbidae, the ram's horn snails.
Distribution
Found mainly in the northern parts of Europe East to Siberia and north-east Asia. ...
'' (Alder, 1838)"''Torquis''"
Fauna Europaea Fauna Europaea is a database of the scientific names and distribution of all living multicellular European land and fresh-water animals. It serves as a standard taxonomic source for animal taxonomy within the Pan-European Species directories Infras ...
, last update 27 January 2011, accessed 1 May 2011.
subgenus ?
* '' Gyraulus acronicus'' (Férussac, 1807)
* † '' Gyraulus albertanus'' (Clessin, 1877)
* ''
Gyraulus albidus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus bakonicus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Halaváts, 1903)
* '' Gyraulus bekaensis'' Glöer & Bössneck, 2007 Glöer P. & Bössneck U. (2007). "Zur Identität von ''Gyraulus piscinarum'' (Bourguignat, 1852) mit der Beschreibung von ''G. bekaensis'' n. sp. (Gastropoda: Planorbidae)". ''Mollusca'' 25(2): 139-146 PDF /ref>
* '' Gyraulus biwaensis'' (Preston, 1916)
* † '' Gyraulus bondartchuki'' (Prysjazhnjuk, 1974)
* ''
Gyraulus borealis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossi ...
'' (Lovén in Westerlund, 1875)
* † ''
Gyraulus chaenostomus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus circumstriatus
''Gyraulus circumstriatus'' is a species of gastropods belonging to the family Planorbidae
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod mo ...
'' (Tryon, 1866)
* ''
Gyraulus convexiusculus
''Gyraulus convexiusculus'' is a species of freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
Distribution
Distribution of ''Gyraulus convexiusculus'' includes Sistan and Baluchestan ...
''
* '' Gyraulus corinna'' (Gray, 1850)
* † '' Gyraulus costatus'' (Klein, 1846)
* '' Gyraulus costulatus'' (Krauss, 1848)Appleton C., Ghamizi M., Jørgensen A., Kristensen T. K., Lange C., Stensgaard A-S. & Van Damme D. (2009) ''Gyraulus costulatus'' In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.4. . Downloaded on 21 March 2011
* '' Gyraulus crenophilus'' Hubendick & Radoman, 1959"''Carinogyraulus''"
Fauna Europaea Fauna Europaea is a database of the scientific names and distribution of all living multicellular European land and fresh-water animals. It serves as a standard taxonomic source for animal taxonomy within the Pan-European Species directories Infras ...
Gyraulus euphraticus
''Gyraulus euphraticus'' is a species of gastropods belonging to the family Planorbidae
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod mollus ...
'' (Mousson, 1874)
* ''
Gyraulus fontinalis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus huwaizahensis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus kleini
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus laevis
''Gyraulus laevis'' is a small species of freshwater snail, an aquatic pulmonate gastropod mollusc in the family Planorbidae, the ram's horn snails.
Distribution
Found mainly in the northern parts of Europe East to Siberia and north-east Asia. ...
Gyraulus mauritianus
''Gyraulus mauritianus'' is a species of small, mostly air-breathing, freshwater snail, aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails. This species is endemic to Mauritius
Mauritius ( ; french: M ...
Gyraulus parvus
''Gyraulus parvus'' is a species of freshwater snail in the family Planorbidae, the ram's horn snails. It is known by the common name ash gyro.
* ''
Gyraulus piscinarum
''Gyraulus piscinarum'' is a species of gastropods belonging to the family Planorbidae.
The species is found in Southeastern Europe (Bulgaria, Turkey) and Western Asia
Western Asia, West Asia, or Southwest Asia, is the westernmost subregion ...
'' (Bourguignat, 1852)
* † ''
Gyraulus platystomus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus quadrangulus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, Aquatic animal, aquatic pulmonate gastropod mollusks in the family Planorbidae, the sheep, ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to ...
Gyraulus riparius
''Gyraulus riparius'' is a species of small freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
Distribution
The distribution of this species is Holarctic:
* Germany - critically endanger ...
''"''Lamorbis''"
Fauna Europaea Fauna Europaea is a database of the scientific names and distribution of all living multicellular European land and fresh-water animals. It serves as a standard taxonomic source for animal taxonomy within the Pan-European Species directories Infras ...
, last update 27 January 2011, accessed 1 May 2011.
* ''
Gyraulus rossmaessleri
''Gyraulus rossmaessleri'' is a small species of freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
Distribution
The distribution of this species is Holarctic. It occurs in countries an ...
Gyraulus rotundistomus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus sabljari
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Brusina, 1892)
* † ''
Gyraulus sachsenhoferi
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus sivalensis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus spirillus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus terekholicus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Prozorova & Starobogatov, 1997)
* ''
Gyraulus terraesacrae
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus triquetrus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus trochiformis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus vermicularis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
(Gould, 1847)
* † ''
Gyraulus vermicularis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus vrapceanus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
Gyraulus waterhousei
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Clessin, 1885)
* † ''
Gyraulus zemendorfensis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Sauerzopf, 1953)
;Species inquirenda:
* ''
Gyraulus acutus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossi ...
'' Clessin, 1907
* ''Gyraulus percarinatus'' Paraense, 2000 name unavailable under ICZN Art. 16.4)
;Species brought into synonymy:
* ''Gyraulus deformis'' Hartmann, 1844: synonym of '' Gyraulus acronicus'' (Férussac, 1807)
* † ''Gyraulus trochiformis applanatus'' (Thomä, 1845): synonym of † '' Gyraulus applanatus'' (Thomä, 1845)
* † ''Gyraulus (Gyraulus) trochiformis applanatus'' var. ''ludovici'' (Noulet, 1854): synonym of † '' Gyraulus ludovici'' (Noulet, 1854)
* † ''Gyraulus (Gyraulus) trochiformis kleini'' var. ''aequeumbilicatus'' (Hilgendorf, 1867): synonym of † ''
Gyraulus kleini
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Gottschick & Wenz, 1916)
* † ''Gyraulus (Gyraulus) trochiformis'' kleini var. ''subinvolutus'' Gottschick, 1920: synonym of † ''
Gyraulus kleini
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Gottschick & Wenz, 1916)
* † ''Gyraulus (Gyraulus) trochiformis'' kleini var. ''subkleini'' Gottschick, 1920: synonym of † ''
Gyraulus kleini
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Gottschick & Wenz, 1916)
* † ''Gyraulus (Gyraulus) trochiformis steinheimensis'' var. ''parvus'' (Hilgendorf, 1867): synonym of † '' Gyraulus steinheimensis'' ( Hilgendorf, 1867)
* † ''Gyraulus (Gyraulus) trochiformis subhemistoma'' var. ''teres'' (Hilgendorf, 1867): synonym of † '' Gyraulus minutus'' ( Hilgendorf, 1867)
* † ''Gyraulus (Gyraulus) trochiformis subhemistoma'' var. ''triquetrus'' (Hilgendorf, 1867): synonym of † ''
Gyraulus triquetrus
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
('' Hilgendorf, 1867)
* † ''Gyraulus (Gyraulus) trochiformis trochiformis'' var. ''elegans'' (Hilgendorf, 1867): synonym of † ''
Gyraulus trochiformis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...
'' (Stahl, 1824)
* † ''Gyraulus (Gyraulus) trochiformis trochiformis'' var. ''turbiniformis'' (von Zieten, 1832): synonym of † ''
Gyraulus trochiformis
''Gyraulus'' is a genus of small, mostly air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
The genus ''Gyraulus'' is known from the Early Cretaceous to the present. Fossils ...