Kallholnoceras
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| Kallholnoceras Temporal range: Ordovician | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | †Oncocerida |
| Genus: | †Kallholnoceras Frye, 1987 |
Kallholnoceras is a genus of early oncocerid nautiloids from the Ordovician of Sweden, known only from the Boda Limestone at Kallholn.
