Proclydonautilus is a genus of nautiloids belonging to the Clydonautilidae known from the Upper Triassic of North America, Europe, and India.
| Proclydonautilus Temporal range: Late Triassic
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | Nautilida |
| Family: | †Clydonautilidae |
| Genus: | †Proclydonautilus Mojsisovics, 1902 |
The shell of Proclydonautilus, like those of other Clydonautilitidae, is involute and smooth. It is distinguished by its suture which has a broad, shallow to deep ventral lobe that divides a large ventral saddle. A large lateral lobe on the flans is followed by a small lateral saddle and a second lateral lobe.
With regard to the suture Proclydonautilus is most similar to Cosmonautilus and Callaionautilus, both also from the Late Triassic.
References edit
- Berhard Kummel, 1964. Nautiloidea-Nautilida. Treatise on Invertebrate Paleontology, Part K. Geological Society of America.
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