Polycystinea - Nassellaria - Williriedellidae
Parent taxon: Williriedellidae according to P. De Wever et al. 2001
See also Kiessling 1995 and Sepkoski 2002
Sister taxa: Cryptamphorella, Excentropylomma, Helvetocapsa, Hemicryptocapsa, Hiscocapsa, Holocryptocanium, Holocryptocapsa, Immersothorax, Kozurium, Minocapsa, Praewilliriedellum, Striatojaponocapsa, Tricolocapsa, Trisyringium, Zhamoidellum
Subtaxa: Williriedellum carpathicum Williriedellum crystallinum Williriedellum ferum Williriedellum frequens Williriedellum madstonense Williriedellum ruesti Williriedellum sujkowski
Distribution:
• Cretaceous of Antarctica (1 collection), Greece (1), Oman (1), the Philippines (1), the Russian Federation (2)
• Jurassic of Albania (5), Antarctica (11), Armenia (1), China (1), Germany (17), Greece (1), Italy (11), Japan (17), Nicaragua (2), the Philippines (2), Romania (6), the Russian Federation (8), Slovakia (3), Spain (3), Switzerland (3), United States (10: California, Oregon)
Total: 107 collections including 144 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.