Gyraulus
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 attributed to Gyraulus sp. have been found in the lakebottom sediments of the Yixian Formation in China, dating to 125 million years ago.
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.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 - Nautilus ramshorn
- † Gyraulus cristaeformis
- † Gyraulus decorus
- † Gyraulus geniculatus
- † Gyraulus gracilis
- † Gyraulus lenapalus
- † Gyraulus lluecai
- † Gyraulus nautiliformis
- † Gyraulus subptychophorus
subgenus Gyraulus Charpentier, 1837
- † Gyraulus aegaeus Willmann, 1981
- † Gyraulus bachmayeri Schlickum & Strauch, 1979
- † Gyraulus bigueti
- † Gyraulus brlici Brusina, 1897
- † Gyraulus brusinai
- Gyraulus chinensis
- † Gyraulus connivens
- † Gyraulus constans
- † Gyraulus dalmaticus
- † Gyraulus deflexus
- † Gyraulus dimitrovici
- † Gyraulus doseni
- † Gyraulus formosus
- † Gyraulus fragilis
- † Gyraulus goussardianus
- † Gyraulus hians
- † Gyraulus hoernesi
- † Gyraulus inornatus
- Gyraulus ioanis Gloer & Pesic, 2007
- Gyraulus janinensis
- † Gyraulus jukici
- † Gyraulus jurkovici
- † Gyraulus katurici
- † Gyraulus kosovensis
- † Gyraulus lazici
- † Gyraulus lendli
- † Gyraulus lineolatus
- † Gyraulus lorentheyi
- Gyraulus meierbrooki Gloer & Pesic, 2007
- † Gyraulus multicingulatus
- † Gyraulus nematophorus
- † Gyraulus novaki
- † Gyraulus nusici
- † Gyraulus oncostomus
- † Gyraulus orahovacensis
- † Gyraulus pachychilus
- † Gyraulus parvulus
- † Gyraulus pavlovici
- † Gyraulus phacecercus
- Gyraulus piscinarum
- † Gyraulus ponticus
- † Gyraulus porcellaneus
- † Gyraulus praeponticus
- † Gyraulus ptychostomus
- † Gyraulus rotella
- Gyraulus shasi Gloer & Pesic, 2007
- † Gyraulus sibinjensis
- † Gyraulus slavonicus
- † Gyraulus spratti
- † Gyraulus stoppanii
- Gyraulus stroemi
- † Gyraulus subverticillus
- † Gyraulus sulfureus
- † Gyraulus tenuistriatus
- † Gyraulus tetracarinatus
- † Gyraulus virgatus
- † Gyraulus zoebeleini Schlickum & Strauch, 1974
subgenus Nautilinus Mousson, 1872
- Gyraulus clymene
- Gyraulus laevis
- Gyraulus acronicus
- † Gyraulus albertanus
- Gyraulus albidus Radoman, 1953
- Gyraulus albus - White ramshorn
- † Gyraulus alienus
- † Gyraulus andrussovi
- † Gyraulus applanatus
- Gyraulus argaeicus
- † Gyraulus arminiensis Jekelius, 1932
- † Gyraulus atkinsoni
- † Gyraulus bakonicus
- Gyraulus bekaensis Glöer & Bössneck, 2007
- Gyraulus biwaensis
- † Gyraulus bondartchuki
- Gyraulus borealis
- † Gyraulus chaenostomus
- Gyraulus chinensis
- † Gyraulus circumstriatus
- Gyraulus convexiusculus
- Gyraulus corinna
- † Gyraulus costatus
- Gyraulus costulatus
- Gyraulus crenophilus Hubendick & Radoman, 1959
- † Gyraulus crescens
- † Gyraulus cryptornatus
- † Gyraulus dealbatus
- Gyraulus deflectus
- † Gyraulus denudatus
- † Gyraulus distortus
- † Gyraulus doricus
- Gyraulus edgbastonensis D. S. Brown, 2001
- † Gyraulus edlaueri
- Gyraulus egirdirensis Glöer & Girod, 2013
- † Gyraulus ehrenbergi
- Gyraulus elenae Vinarski, Glöer & Palatov, 2013
- Gyraulus essingtonensis
- Gyraulus eugyne Meier-Brook, 1983
- Gyraulus euphraticus
- Gyraulus fontinalis Hubendick & Radoman, 1959
- † Gyraulus fuchsi
- † Gyraulus geminus
- Gyraulus gilberti
- † Gyraulus globosus
- † Gyraulus goetzendorfensis
- Gyraulus hebraicus
- † Gyraulus helicophantoides
- † Gyraulus homalosomus
- Gyraulus homsensis
- Gyraulus hornensis F. C. Baker, 1934
- Gyraulus huwaizahensis Glôer & Naser, 2005
- Gyraulus ioanis Glöer & Pešić, 2007
- Gyraulus janinensis
- Gyraulus kahuica
- † Gyraulus kleini
- Gyraulus kosiensis Glöer & Bössneck, 2013
- † Gyraulus krohi Neubauer & Harzhauser in Harzhauser et al., 2014
- Gyraulus laevis
- † Gyraulus ludovici
- Gyraulus luguhuensis Shu, Köhler, Fu & Wang, 2013
- Gyraulus lychnidicus Hesse, 1928
- † Gyraulus marinkovici
- † Gyraulus matraensis Gál et al., 1999 †
- Gyraulus mauritianus
- Gyraulus meierbrooki Glöer & Pešić, 2007
- † Gyraulus micromphalus
- † Gyraulus minutus
- † Gyraulus nedici
- Gyraulus nedyalkovi Glöer & Georgiev, 2012
- † Gyraulus oecsensis Wenz, 1919
- † Gyraulus okrugljakensis Neubauer, Harzhauser, Kroh, Georgopoulou & Mandic, 2014 †
- † Gyraulus oxystoma
- Gyraulus pamphylicus Glöer & Rähle, 2009
- Gyraulus parvus
- Gyraulus piscinarum
- † Gyraulus platystomus Nützel & Bandel, 1993
- † Gyraulus popovici
- † Gyraulus primiformis
- † Gyraulus protectus Jekelius, 1944
- † Gyraulus protocrescens Nützel & Bandel, 1993
- † Gyraulus pseudhomalosomus
- † Gyraulus pseudotenuis
- † Gyraulus ptycophorus
- † Gyraulus pulici
- † Gyraulus quadrangulus
- † Gyraulus rasseri Neubauer, Harzhauser, Kroh, Georgopoulou & Mandic, 2014†
- † Gyraulus revertens
- † Gyraulus rhytidophorus
- Gyraulus riparius
- Gyraulus rossmaessleri
- Gyraulus stankovici Hadzisce, 1955
- Gyraulus rotula
- † Gyraulus rotundistomus
- † Gyraulus rotundostomus Nützel & Bandel, 1993
- † Gyraulus rumanus Wenz in Krejci-Graf & Wenz, 1932
- † Gyraulus sabljari
- † Gyraulus sachsenhoferi Harzhauser & Neubauer in Harzhauser et al., 2012
- † Gyraulus seibersdorfensis
- Gyraulus shasi Glöer & Pešić, 2007
- Gyraulus sivalensis
- † Gyraulus soceni Jekelius, 1944
- † Gyraulus solenoeides
- Gyraulus spirillus
- Gyraulus stankovici Hadžišče, 1953
- † Gyraulus steinheimensis
- † Gyraulus subhemistoma
- † Gyraulus sulcatus
- † Gyraulus supremus
- † Gyraulus symmetricus
- Gyraulus taseviensis Glöer & Girod, 2013
- Gyraulus terekholicus
- Gyraulus terraesacrae Rensch, 1934
- Gyraulus tokyoensis
- Gyraulus transsylvanicus †
- Gyraulus trapezoides Polinski, 1929
- † Gyraulus triquetrus
- † Gyraulus trochiformis
- † Gyraulus trolli
- † Gyraulus turislavicus Jekelius, 1944
- Gyraulus vermicularis
- † Gyraulus vermicularis
- † Gyraulus verticillus
- † Gyraulus vrapceanus Neubauer, Harzhauser, Kroh, Georgopoulou & Mandic, 2014
- Gyraulus waterhousei
- † Gyraulus zemendorfensis
- Gyraulus acutus Clessin, 1907
- Gyraulus percarinatus Paraense, 2000 name unavailable under ICZN Art. 16.4)
- Gyraulus deformis Hartmann, 1844: synonym of Gyraulus acronicus
- † Gyraulus trochiformis applanatus : synonym of † Gyraulus applanatus
- † Gyraulus trochiformis applanatus var. ludovici : synonym of † Gyraulus ludovici
- † Gyraulus trochiformis kleini var. aequeumbilicatus : synonym of † Gyraulus kleini
- † Gyraulus trochiformis kleini var. subinvolutus Gottschick, 1920: synonym of † Gyraulus kleini
- † Gyraulus trochiformis kleini var. subkleini Gottschick, 1920: synonym of † Gyraulus kleini
- † Gyraulus trochiformis steinheimensis var. parvus : synonym of † Gyraulus steinheimensis
- † Gyraulus trochiformis subhemistoma var. teres : synonym of † Gyraulus minutus
- † Gyraulus trochiformis subhemistoma var. triquetrus : synonym of † Gyraulus triquetrus
- † Gyraulus trochiformis trochiformis var. elegans : synonym of † Gyraulus trochiformis
- † Gyraulus trochiformis trochiformis var. turbiniformis : synonym of † Gyraulus trochiformis''