Kingdom Animalia Class †Helcionelloida Superfamily †Helcionelloidea | Phylum Mollusca Order †Helcionelliformes Rank Genus | |
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.
References
Tichkaella Wikipedia(Text) CC BY-SA