Cassis (gastropod) explained

Cassis, common name the helmet shells, is a genus of very large sea snails, marine gastropod mollusks in the family Cassidae, the helmet shells and their allies.^[1] This is the type genus of the subfamily Cassinae.

Species

The genus Cassis includes extant and extinct species:^{[1] [2]}

• Cassis abbotti Bouchet, 1988
• † Cassis altispira Beu 2010
• † Cassis birmanica Vredenburg 1921
• † Cassis brasili (Cossmann & Pissarro, 1905)
• † Cassis calusa Petuch and Berschauer 2018
• Cassis cornuta (Linnaeus, 1758)
• † Cassis costulifera Beu 2010
• † Cassis delta Parker 1948
• † Cassis depressior Martin 1879
• Cassis fimbriata Quoy & Gaimard, 1833
• Cassis flammea (Linnaeus, 1758)
• † Cassis flintensis Mansfield 1940
• † Cassis floridensis Tucker and Wilson 1932
• † Cassis glaucoides Martin 1879
• † Cassis herklotsi Martin 1879
• † Cassis ketteri Parodiz and Tripp 1992
• Cassis kreipli Morrison, 2003
• † Cassis lelongi Gain, Belliard & Le Renard, 2017
• † Cassis maccormacki Olsson 1928
• Cassis madagascariensis Lamarck, 1822
• † Cassis mammillaris Grateloup 1927
• Cassis nana Tenison-Woods, 1879
• † Cassis nigellensis Gain, Belliard & Le Renard, 2017
• Cassis norai Prati Musetti, 1995
• Cassis nummulitiphila Sacco 1890
• † Cassis parfouruorum Gain, Belliard & Le Renard, 2017
• Cassis patamakanthini Parth, 2000
• † Cassis powelli Petuch and Berschauer, 2018
• Cassis retusa Michelotti 1861
• Cassis subtuberosa Hanna 1926
• Cassis sulcifera Sowerby 1850
• Cassis tessellata Gmelin, 1791
• Cassis togata White 1887
• Cassis tuberosa (Linnaeus, 1758)
• Cassis vialensis Fuchs 1870

Fossils of the sea snails within this genus have been found all over the world in sediments from Paleocene to Recent (age range: 66 to 0 million years ago).^[2]

Species brought into synonymy:^[1]

• Cassis achatina Lamarck, 1816: synonym of Semicassis labiata (Perry, 1811)
• Cassis areola (Linnaeus, 1758): synonym of Phalium areola (Linnaeus, 1758)
• Cassis bituberculosa Martens, 1901: synonym of Echinophoria bituberculosa (Martens, 1901)
• Cassis callosa Röding, 1798: synonym of Nassarius gibbulosus (Linnaeus, 1758)
• Cassis centiquadrata (Valenciennes, 1832): synonym of Semicassis centiquadrata (Valenciennes, 1832)
• Cassis cernica Sowerby III, 1888: synonym of Casmaria ponderosa ponderosa (Link, 1807)
• Cassis coarctata G.B. Sowerby I, 1825: synonym of Cypraecassis coarctata (G.B. Sowerby I, 1825)
• Cassis coronadoi Crosse, 1867: synonym of Echinophoria coronadoi (Crosse, 1867)
• Cassis dalli Anderson, 1929: synonym of Echinophoria hadra (Woodring & Olsson, 1957)
• Cassis glans Röding, 1798: synonym of Demoulia abbreviata (Gmelin, 1791)
• Cassis glauca (Linnaeus, 1758): synonym of Phalium glaucum (Linnaeus, 1758)
• Cassis globulus Menke, 1829: synonym of Demoulia ventricosa (Lamarck, 1816)
• Cassis gracilenta Yokoyama, 1928: synonym of Cyllene gracilenta (Yokoyama, 1928)
• Cassis japonica Reeve, 1848: synonym of Semicassis bisulcata (Schubert & Wagner, 1829)
• Cassis labrosa Martini, 1773: synonym of Malea pomum (Linnaeus, 1758)
• Cassis ringens Swainson, 1822: synonym of Malea ringens (Swainson, 1822)
• Cassis rufa (Linnaeus, 1758): synonym of Cypraecassis rufa (Linnaeus, 1758)
• Cassis spinosa (Gronovius, 1781): synonym of Cassis tessellata Gmelin, 1791
• Cassis tenuis Wood, 1828: synonym of Cypraecassis tenuis (Wood, 1828)
• Cassis vibex (Linnaeus, 1758): synonym of Casmaria erinaceus (Linnaeus, 1758)
• Cassis wyvillei Watson, 1886: synonym of Echinophoria wyvillei (Watson, 1886)

External links

• Web site: Cassis Scopoli, 1777. biolib.cz.

Notes and References

1. Bouchet, P. . 2014 . Cassis Scopoli, 1771 . 206265 . 24 July 2014.
2. https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=9604 Fossilworks