Circothecidae | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Superphylum: | Lophotrochozoa |
Class: | † Hyolitha |
Order: | † Orthothecida (?) |
Family: | † Circothecidae |
Circothecidae are a family of Cambrian problematica, sometimes attributed to the Hyolitha, [1] though some authors suggest (on the basis of no specified evidence) that they are definitely not. [2]