Halloceras
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| Halloceras Temporal range:
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|---|---|
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | Nautilida |
| Family: | †Rutoceratidae |
| Genus: | †Halloceras Hyatt, 1884 |
Halloceras is a gyroconic rutoceratid from the Lower Devonian of North America, with a subtriangular whorl section, narrow dorsum (on the inner side), divergent flanks, and broad, rounded venter (on the outer side), frills at various growth points, suture with shallow ventral and lateral lobes, and a small siphuncle near the venter.
Halloceras was named by Hyatt in 1884. The type us Halloceras undulatum.
References
- Bernhard Kümmel, 1964 Nautiloidea-Nautilida. Treatise on Invertebrate Paleontology, Part K, Mollusca 3. Teichert and Moore, eds. Geol Soc of America and Univ Kansas Press.Error: "Q5643049" is not a valid Wikidata entity ID.
 | This prehistoric cephalopod-related article is a stub. You can help Justapedia by expanding it. |
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