Tannuella
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| Tannuella Temporal range: | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | †Helcionelloida |
| Order: | †Helcionelliformes |
| Family: | †Helcionellidae |
| Genus: | †Tannuella |
Tannuella is a genus of helcionellids known from Lower Cambrian strata.
It has a high, septate shell similar to that of Knightoconus . These genera were once considered ancestral cephalopods,[1] but are more broadly assigned to the helcionellids (or putatively the tergomyans); i.e. "Cambrian monoplacophora".[2]