Helcionella
From Infogalactic: the planetary knowledge core
| Helcionella |
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Scientific classification  |
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| (unranked): | incertae sedis |
| Class: | †Helcionelloida |
| Order: | †Helcionelliformes |
| Family: | †Helcionellidae |
| Genus: | †Helcionella Grabau & Shimer, 1909 |
| Species | |
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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.[1]
Helcionella is the type genus of the family Helcionellidae.
References
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