Gastropoda - Epitonioidea - Epitoniidae
Alternative spelling: Acirsella
Parent taxon: Acirsa according to J.-M. Pacaud and J. Le Renard 1995
See also Price and Palmer 1928 and Sepkoski 2002
Sister taxa: Acirsa (Acirsa), Acirsa (Hemiacirsa), Acirsa (Plesioacirsa), Acirsa alpha, Acirsa beta, Acirsa culmosa, Acirsa delta, Acirsa epsilon, Acirsa gravida, Acirsa nexilia, Acirsa obtusa, Acirsa penepolaris
Subtaxa: Acirsa (Acirsella) henryleai Acirsella effiae
Ecology: slow-moving low-level epifaunal carnivore
Distribution:
• Quaternary of United States (3: California collections)
• Eocene of France (1), Germany (1), the United Kingdom (1), United States (1: Texas)
• Paleocene of Poland (4), United States (1: Texas)
Total: 12 collections including 13 occurrences