†Siphonia (Pachycalymma) Schrammen 1901 (demosponge)
Demospongiae - Tetralithistida - Siphoniidae
Alternative spelling: Pachycalymma
Parent taxon: Siphonia according to R. M. Finks et al. 2004
See also Sepkoski 2002
Sister taxa: Siphonia (Siphonia), Siphonia griepenkerli, Siphonia maliformis, Siphonia micropora, Siphonia permiana, Siphonia tulipa
Subtaxa: Pachycalymma subglobosa
Type: Pachycalymma subglobosa
Ecology: stationary epifaunal suspension feeder
Distribution:
• Cretaceous of Germany (4 collections)
Total: 4 collections each including a single occurrence