†superfamily Tylodinoidea Gray 1847 (snail)
Gastropoda - Opisthobranchiata
Parent taxon: Notaspidea according to J. A. Todd 2001
See also Beesley 1998
Sister taxon: Pleurobranchoidea
Subtaxa: Tylodinidae Umbraculidae
Ecology: epifaunal carnivore
Distribution:
• Miocene of Brazil (1 collection), France (1), Germany (1), Sao Tome and Principe (1)
• Eocene of the United Kingdom (1), United States (24: Alabama, Louisiana, Mississippi, Texas)
• Paleocene of United States (3: Alabama, Maryland, Texas)
Total: 32 collections including 35 occurrences