Hemisinidae

Hemisinidae Temporal range: Tithonian (Late Jurassic)–recent 149.2–0  Ma [1] PreꞒ Ꞓ O S D C P T J K Pg N
Hemisinus brevis
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Superfamily:	Cerithioidea
Family:	Hemisinidae P. Fischer & Crosse, 1891
Synonyms
Aylacostomatinae Parodiz, 1969 Hemisininae P. Fischer & Crosse, 1891 (ranked as subfamily) Pachymelaniidae Bandel & Kowalke, 1999

Hemisinidae is a family of snails in the superfamily Cerithioidea. ^{[1] [2]} They occur in freshwater and brackish environments ^[2] on all continents except Australia and Antarctica. ^[3]

Genera

There are five extant genera: ^[2]

• Aylacostoma Spix, 1827
• Cubaedomus Thiele, 1928
• Hemisinus Swainson, 1840
• Longiverena Pilsbry & Olsson, 1935
• Pachymelania E. A. Smith, 1893

There are also four genera only known from fossils: ^[2]

• † AxonellaPacaud, Lhomme & Renaud, 2021
• † GantmelaniaKowalke, 2001
• † PyrguliferaMeek, 1871
• † StephanipheraS. Schneider, Kollmann & Pickford, 2020

Pachymelania aurita

References

1. Neubauer, Thomas A. (2023). "The fossil record of freshwater Gastropoda – a global review". Biological Reviews. doi: 10.1111/brv.13016 .
2. Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O, eds. (2023). "Hemisinidae P. Fischer & Crosse, 1891". MolluscaBase. World Register of Marine Species . Retrieved 22 November 2023.
3. "Hemisinidae". Global Biodiversity Information Facility . Retrieved 22 November 2023.