Gomphoceras
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Gomphoceras is a questionable nautiloid cephalopod genus assigned to the Oncocerida. The family to which it might belong is undetermined.
Quick Facts Gomphoceras Temporal range: Middle Silurian, Scientific classification ...
Gomphoceras Temporal range: Middle Silurian | |
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Scientific classification | |
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Family: | undetermined |
Genus: | Gomphoceras Sowerby, 1839 |
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Gomphoceras, named by Sowerby in 1839, is generally short but rapidly expanding, straight to slightly endogastric, with a gibbous body chamber such that all sides are convex. The aperture as vertically transverse, with a hyponomic sinus on a low spout-like process and a larger rounded dorsal sinus connetected above.
Tetrameroceras and Trimeroceras, both oncocerids, are similar in general form, but have more complex apertures.