Mackinnonia
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Mackinnonia Temporal range:
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Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | †Helcionelloida |
Order: | †Helcionelliformes |
Family: | †Helcionellidae |
Genus: | †Mackinnonia Runnegar 1980 |
Species | |
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Mackinnonia is a genus of small shelly fossil comprising straight or slightly coiled shells of the helcionelloid type.[1] The outer surface of their shell is smooth, whereas the inner surface has a net-like ridges.[1] They are known from late Early Cambrian rocks across North America and Greenland.[1]
References
- Fossil Focus: The place of small shelly fossils in the Cambrian explosionError: "Q6724540" is not a valid Wikidata entity ID.
Categories:
- Articles with short description
- Articles with 'species' microformats
- Taxonbars desynced from Wikidata
- Taxonbar pages requiring a Wikidata item
- Taxonbars with invalid from parameters
- Taxonbars without secondary Wikidata taxon IDs
- Helcionellidae
- Cambrian animals of North America
- Paleozoic life of Newfoundland and Labrador
- Paleozoic life of Quebec
- All stub articles
- Prehistoric mollusc stubs
- Cambrian genus extinctions