Protozoa - Nassellaria - Hsuidae
Full reference: E. A. Pessagno, Jr. and P.A. Whalen. 1982. Lower and Middle Jurassic Radiolaria (multicyrtid Nassellariina) from California, east-central Oregon and the Queen Charlotte Islands, B.C. Micropaleontology 28(2):111-169
Parent taxon: Archaeodictyomitracea according to P. De Wever et al. 2001
See also Hull 1997
Sister taxa: Archaeodictyomitridae, Bagotidae, Unumidae
Subtaxa: Hsuum Linaresia Parahsuum Pseudohsuum Semihsuum Transhsuum
Type: Hsuum
Ecology: passively mobile planktonic omnivore
Distribution:
• Cretaceous of Antarctica (1 collection), Austria (4), Italy (15), Oman (5), the Philippines (1), the Russian Federation (1), United States (1: California)
• Jurassic to Cretaceous of Austria (1), Italy (3), Oman (1)
• Jurassic of Albania (8), Antarctica (15), Argentina (1), Armenia (3), Austria (4), Canada (104: British Columbia), China (1), Costa Rica (2), Germany (18), Greece (10), India (3), Indonesia (2), Italy (34), Japan (149), Malaysia (1), Mexico (20), New Zealand (3), Nicaragua (1), Oman (20), the Philippines (9), Romania (8), the Russian Federation (40), Slovakia (9), Slovenia (5), Spain (7), Switzerland (3), Turkey (14), United States (80: Alaska, California, Oregon)
• Triassic of Japan (3)
Total: 610 collections including 1563 occurrences