Gastropoda - Neogastropoda - Melongenidae
Invalid subtaxa: Leiostoma Swainson 1840 [replaced name], Sycum Bayle 1880 [replaced name]
Parent taxon: Melongenidae according to G. J. Vermeij and P. Lozouet 2012
See also Abbass 1967, Adegoke 1977, Bayle 1880, Cox 1931, Garvie 1996, Morellet and Morellet 1945, Nagao 1928, Sepkoski 2002, Stilwell et al. 2004 and Woods 1922
Sister taxa: Busyconinae, Cornulina, Echinofulgurinae, Fascioplex, Fyfea, Levifusus, Lomirosa, Melongeninae, Nipponitys, Palaeatractus, Protobusycon, Pseudomazzalina, Pugilina, Pyrifusus, Saginafusus, Saturnus, Torquifer, Tropochasca, Volema
Subtaxa: Sycostoma (Sycostoma) Sycostoma bulbiforme Sycostoma kenawii Sycostoma pyrinota Sycum americanum Sycum mucronatum Sycum stillum
Ecology: epifaunal carnivore
Distribution:
• Quaternary of Saudi Arabia (2 collections)
• Eocene of Belgium (2), Bulgaria (2), Egypt (1), France (5), Japan (2), Spain (1), the United Kingdom (15), United States (9: Alabama, Texas)
• Paleocene of Antarctica (1), Denmark (2), France (1), Greenland (1), Mexico (1), Nigeria (1), Poland (1), United States (10: California, Texas)
• Cretaceous of Chile (1)
Total: 58 collections including 67 occurrences
Specimen images are retrieved through the ePANDDA API.
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