| Jovellaniidae Temporal range: | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | †Oncocerida |
| Family: | †Jovellaniidae Foord, 1888 |
| Genera | |
| |
Jovellaniidae was established as a family within the Oncocerida to include genera characterized by longiconic orthocones and cyrtocones with a subtriangular to depressed cross-section in which the ventral (siphuncular) side is typically angular or more acutely rounded than the dorsal (antisiphuncular) side, and in which the siphuncle is generally large, ventral, and with lamellar actinosiphonate deposits (Flower 1950, Sweet 1964)
Jovelaniids have a range that extends from the Middle Silurian to the Upper Ordovician and are known from North America Europe. (Sweet 1964) They are thought to be derived from the Valcouroceratidae.
Jovellaniidae was given its name by Foord in 1888; its type is the genus Jovellania
References
- Flower,R.H. 1950; Flower & Kummel; A Classification of the Nautiloidea;Journal of Paleontology, Vol 24, no 5, pp604–610, Sept 1950
- Sweet, W.C. 1964; Nautiloidea-Oncocerida, Treatise on Invertebrate Paleontology, Part K Nautiloidea, Geological Society of America and University of Kansas Press. Teichert and Moore (eds)
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.