Trimeroceras
| Trimeroceras | |
|---|---|
| Scientific classification | |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | Oncocerida |
| Family: | Trimeroceratidae |
| Genus: | Trimeroceras Hyatt, 1884 |
Trimeroceras is a straight oncocerid (Nautilodea, Cephalopoda) from the Middle and Upper Silurian of Europe, and type for the Trimeroceratidae. A principal character is the slit-like aperture with a hyponomic sinus for the water-jet funnel, and mid dorsal and dorsolateral sinuses.
References
Walter C. Sweet, 1964. Nautiloidea-Oncocerida; Treatise on Invertebrate Paleontology, Part K (K298). Geological Society of America and University of Kansas Press.
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