Gastropoda - Cerithioidea - Siliquariidae
Alternative spelling: Agathirses
Parent taxon: Tenagodus according to J.-M. Pacaud and J. Le Renard 1995
See also Ladd 1972 and Sepkoski 2002
Sister taxa: Tenagodus (Pyxipoma), Tenagodus (Tenagodus), Tenagodus anguina, Tenagodus bajaensis, Tenagodus californiensis, Tenagodus cossmani, Tenagodus granti, Tenagodus obtusiformis, Tenagodus obtusus, Tenagodus occlusus, Tenagodus sowerbyi, Tenagodus terbellus, Tenagodus vitis, Siliquaria parva, Siliquaria senex, Siliquaria modesta, Siliquaria biparitita, Siliquaria triadica, Siliquaria cariboea
Subtaxa: none
Distribution:
• Miocene of New Zealand (1 collection)
• Eocene of France (2), United States (1: Texas)
Total: 4 collections each including a single occurrence