Helcionella
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Helcionella Temporal range: Cambrian |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| (unranked): | incertae sedis |
| Class: | †Helcionelloida |
| Order: | †Helcionelliformes |
| Family: | †Helcionellidae |
| Genus: |
†Helcionella Grabau & Shimer, 1909 |
| Species | |
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| Synonyms | |
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Pseudotheca Redlich 1899 |
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Pseudotheca Redlich 1899
Helcionella is a genus of helcionellid, a fossil marine invertebrate animal that is considered to be a mollusk and may possibly be a gastropod. The shells of these animals are about a centimetre in size. The tip of the shell extends beyond the rear extremity of the shell's aperture, and the shell is "endogastric" in shape.
Helcionella is the type genus of the family Helcionellidae.
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