†subfamily Pseudogruenewaldtiinae Rzhonsnitskaya et al. 1997 (lamp shell)
Rhynchonellata - Atrypida - Atrypidae
Parent taxon: Atrypidae according to A. Williams et al. 2002
Sister taxa: Atrypinae, Carinatininae, Gibberosatrypa, Invertininae, Spinatrypinae, Variatrypinae, Waiotrypa, Zygospirinae
Subtaxa: Iowatrypa Pseudogruenewaldtia
Type: Pseudogruenewaldtia
Ecology: stationary epifaunal suspension feeder
Distribution:
• Devonian of Belgium (2 collections), Canada (2: Alberta, Alberta, Saskatchewan, Mackenzie), China (4), Poland (1), the Russian Federation (3), United States (3: Alaska, Iowa)
Total: 15 collections including 17 occurrences