''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
''Protowenella'' is a genus of hyolith
Hyoliths are animals with small conical shells, known from fossils from the Palaeozoic era. They are at least considered as being lophotrochozoan, and possibly being lophophorates, a group which incl ...
''.
References
Cambrian molluscs
Paleozoic life of British Columbia
Fossils of Morocco
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