| Aletoceras Temporal range: Middle Devonian | |
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| Genus: | Aletoceras Flower, 1938 |
Aletoceras is a genus of Oncocerida nautiloids from the middle Devonian of North America included in the family Brevicoceratidae.
The shell is a depressed brevicone, that is to say short. Sutures are generally straight, the siphuncle ventral, empty. The peristome (aperture rim) has a broad hyponomic sinus -for the hydrojet funnel, ventrolateral projections, dorsolateral sinuses - possibly for the eyes, and probably a mid dorsal sinus.
In general form, Aletoceras resembles Brevicoceras and Eleusoceras , both also from the middle Devonian of North America.
The orientation of Aletoceras and others like it may have been vertical with the aperture facing down .
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