Tichkaella
Extinct genus of molluscs
From Wikipedia, the free encyclopedia
Tichkaella is a genus of helcionellid from the Middle Cambrian. It has a strongly spiralled, smooth shell with concentric ridges that have low relief. Other than its looser coiling, it is very similar to Protowenella.[1]
| Tichkaella Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | †Helcionelloida |
| Order: | †Helcionelliformes |
| Superfamily: | †Helcionelloidea |
| Genus: | †Tichkaella |
