Gastropoda - Neogastropoda - Columbellidae
Alternative spelling: Costoanachis
Parent taxon: Anachis according to K. Monsecour and D. Monsecour 2005
See also Addicott 1970, Gardner 1948, Ladd 1977, Ladd 1982, MacNeil 1960, Marks 1951, Richards 1962, Sepkoski 2002, Spencer and Campbell 1987, Todd 2001 and Woodring 1964
Sister taxa: Anachis (Alia), Anachis (Suturoglypta), Anachis (Zafra), Anachis guaica, Anachis haueri, Anachis minuta, Anachis miser, Anachis watsonae
Subtaxa: Anachis (Costoanachis) mira Anachis (Costoanachis) stevensoni Anachis (Costoanachis) stibara Anachis (Costoanachis) translirata Anachis (Costoanachis) varicosa Costoanachis avara Costoanachis divilitus Costoanachis exilis Costoanachis haitensis Costoanachis semiplicata
Distribution:
• Quaternary of Brazil (10 collections), Costa Rica (1), Japan (1), Panama (1), Peru (1), the United Kingdom (1), United States (32: Florida, Louisiana, Maryland, New Jersey, North Carolina, South Carolina), Uruguay (1), Vanuatu (2), Venezuela (1)
• Pliocene of Costa Rica (5), the Dominican Republic (1), Ecuador (1), Fiji (2), Jamaica (4), Japan (3), Mexico (1), Panama (4), United States (4: Florida, North Carolina, Virginia), Venezuela (1)
• Miocene of the Dominican Republic (1), Ecuador (1), France (1), Germany (24), Greece (2), the Netherlands (2), Palau (1), Panama (41), Trinidad and Tobago (3)
• Oligocene to Miocene of Haiti (1)
Total: 154 collections including 185 occurrences