†Delthyris (Quadrifarius) (lamp shell)
Rhynchonellata - Spiriferida - Delthyrididae
Alternative spelling: Quadrifarius
Parent taxon: Delthyris according to A. Williams et al. 2006
See also Sepkoski 2002
Sister taxa: Delthyris acutilirata, Delthyris consobrina, Delthyris elegans, Delthyris elevata, Delthyris ptychodes, Delthyris pusio, Delthyris rostrata
Subtaxa: none
Ecology: stationary epifaunal suspension feeder
Distribution:
• Silurian to Devonian of Canada (2: Nova Scotia collections)
• Silurian of Canada (1: Nova Scotia), Lithuania (2), Poland (1)
Total: 6 collections including 7 occurrences