Cystiscinae
Cystiscinae are a taxonomic subfamily of minute sea snails. These are marine gastropod mollusks or micromollusks in the family Cystiscidae, and the clade Neogastropoda.
| Cystiscinae | |
|---|---|
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| Drawing of a typical animal in this subfamily | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Cystiscidae |
| Subfamily: | Cystiscinae Stimpson, 1865 |
Diagnosis
Shell minute to small, white; spire immersed to low; surface smooth or axially costate; lip thickened, smooth or denticulate; external varix absent; siphonal notch absent; posterior notch absent; columella multiplicate, with combined total of usually 2 to 8 plications plus parietal lirae; internal whorls cystiscid type. Animal mantle smooth, at least partially extending over external shell surface. Internal anatomy unknown.
Genera
Genera within the subfamily Cystiscinae are as follows:[1]
- Crithe Gould, 1860
- Cystiscus Stimpson, 1865:55
- Extra Jousseaume, 1894 - with the only species Extra extra Jousseaume, 1894[2]
- Gibberula Swainson, 1840
- Inbiocystiscus Ortea and Espinosa, 2001[3]
- Intelcystiscus Ortea and Espinosa, 2001[3]
- †Marginocystiscus Landau, C. M. Silva & Heitz, 2016[4]
- Pachybathron Gaskoin, 1853
- Persicula Schumacher, 1817
- Ticocystiscus Espinosa and Ortea, 2002
- Ticofurcilla Espinosa & Ortea, 2002
- †Topaginella Laseron, 1957:288
Comparative shell structure of three genera
Cystiscus 
Crithe 
Extra
References
- MolluscaBase (2018). "Cystiscinae Stimpson, 1865". WoRMS. World Register of Marine Species. Retrieved 4 January 2019.
- Jousseaume, F.P. (1894). "Diagnoses des coquilles de nouveaux mollusques". Bulletin de la Société Philomathique de Paris. 8 (6): 98–105. Retrieved 4 July 2020.
- Ortea, J.; Espinosa, J. (2001). "Intelcystiscus e Inbiocystiscus (Mollusca: Neogastrópoda: Cystiscidae) dos nuevos géneros del Atlántico occidental tropical". Avicennia. 14: 107–114.
- Landau, Bernard Manue; Marques da Silva, Carlos; Heitz, Antoine (2016). "Systematics of the lower-middle Miocene Cantaure Formation, Paraguaná Peninsula, Venezuela". Bulletins of American Paleontology. 389–391: 1–581.
- Espinosa, J. and J. Ortea 2002. Nuevas especies de margineliformes de Cuba, Bahamas y el Mar Caribe de Costa Rica Avicennia 15:101-128.
- Ortea, J. y J. Espinosa 2001. Intelcystiscus e Inbiocystiscus (Mollusca: Neogastrópoda: Cystiscidae) dos nuevos géneros del Atlántico occidental tropical. Avicennia 14 107-114.
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