Protozoa - Actinommacea - Xiphostylidae
Parent taxon: Actinommacea according to P. Zügel 1997
See also Hull 1997
Sister taxon: Leugeonidae
Subtaxa: Amuria Archaeocenosphaera Suna Triactoma Trigonosphaera Tripocyclia Xiphostylus Zanola
Type: Xiphostylus
Ecology: passively mobile planktonic omnivore
Distribution:
• Cretaceous of Albania (1 collection), Antarctica (1), Austria (11), Azerbaijan (6), Canada (4: Nunavut), Germany (1), Greece (4), Italy (84), Oman (21), the Philippines (1), Poland (2), the Russian Federation (5), Slovakia (1), Turkey (1)
• Jurassic to Cretaceous of Austria (3), Germany (1), Italy (3), Oman (2), Turkey (1)
• Jurassic of Albania (3), Antarctica (20), Argentina (1), Austria (19), Canada (82: British Columbia), China (1), Germany (10), Greece (10), Hungary (1), India (1), Italy (43), Japan (30), Malaysia (1), Mexico (19), New Zealand (1), Nicaragua (1), Oman (13), Peru (1), the Philippines (5), Romania (8), the Russian Federation (20), Slovakia (22), Slovenia (5), Spain (7), Switzerland (2), Turkey (1), United States (75: California, Oregon)
• Triassic of Albania (3), Canada (41: British Columbia), China (2), Cyprus (1), Hungary (5), Japan (2), Thailand (22), Turkey (2)
• Permian of China (6)
Total: 639 collections including 1380 occurrences