Stenolaemata - Cyclostomata - Horneridae
Parent taxon: Cancellata according to D. P. Gordon and P. D. Taylor 2015
See also Bassler 1953, Di Martino and Taylor 2014, Lee et al. 1997, Schmidt 2003 and Smith et al. 2006
Sister taxa: Calvetiidae, Crisinidae, Cytididae, Petaloporidae, Pseudidmoneidae, Stegohorneridae
Subtaxa: Crassohornera Hornera Siphodictyum
Ecology: stationary epifaunal suspension feeder
Distribution:
• Quaternary of Antarctica (6 collections), Greece (1)
• Pliocene of Antarctica (1), Australia (1)
• Miocene of Australia (1), the Czech Republic (10), Egypt (1), France (2), Germany (1), Indonesia (1), Morocco (1), Romania (2), Spain (1)
• Eocene of New Zealand (3), Poland (1), United States (1: Mississippi)
• Paleocene of Denmark (1)
• Cenozoic of Australia (5)
• Cretaceous of France (17), the United Kingdom (3)
Total: 60 collections including 79 occurrences