Nothoceratidae
| Nothoceratidae Temporal range:
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Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | †Oncocerida |
| Family: | †Nothoceratidae Fischer, 1882 |
Nothoceratidae is a family of nautiloid cephalopods in the orthoceratoid order Oncocerida in which shells are exogastrically or endogastrically , planospiral, or ; often with a constricted or visored aperture; and a siphuncle commonly composed of concave segments and occupied by deposits. Some ten genera have been described which lived during the time between the Early Silurian and Late Devonian. The ancestral form is probably Perimecoceras which is known from the Upper Silurian of central Europe and which is similar in external form the Oonoceras from the Oncoceratidae.
References[]
- Sweet, W. C. 1964; Nautiloidea -Oncocerida; Treatise on Invertebrate Paleontology, Part K; Geological Society of America and University of Kansas press; Teichert and Moore (eds)
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Categories:
- Prehistoric nautiloid families
- Llandovery first appearances
- Late Devonian animals
- Late Devonian extinctions
- Prehistoric nautiloid stubs