Gastropoda - Neogastropoda - Melongenidae
Alternative spellings: Fusus (Hemifusus), Hemifusus
Parent taxon: Volema according to G. Rosenberg et al. 2006
See also Gabb 1864, Nagao 1928, Oostingh 1935 and Sepkoski 2002
Sister taxa: none
Subtaxa: Fusus (Hemifusus) cooperii Hemifusus (Hemifusus) Hemifusus arnoldi Hemifusus dalli Hemifusus lewisiana Hemifusus lincolnensis Hemifusus montensis Hemifusus sopenahensis Hemifusus tejonensis Hemifusus waringi Volema (Hemifusus) ternatanus
Distribution:
• Quaternary of Japan (5 collections), Taiwan (2), Thailand (1)
• Pliocene to Pleistocene of Malaysia (1)
• Pliocene of Indonesia (3)
• Miocene of Japan (2)
• Eocene of Japan (1), United States (22: California, Oregon, Washington)
• Paleocene of Pakistan (1), Poland (1)
Total: 39 collections including 41 occurrences