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Xenoceltites subevolutus)
| Xenoceltites Temporal range:
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|---|---|
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | † Ammonoidea |
| Order: | † Ceratitida |
| Family: | † Xenoceltitidae |
| Genus: | †
Xenoceltites Spath, 1930 |
Xenoceltites is an extinct genus of ceratite ammonoid found worldwide in the Lower Triassic. [1] [2]
Diagnosis
One of the earliest ceratites, Xenoceltites has a narrow planospiral shell with a compressed whorl section, that has a suture with two weakly toothed lateral lobes and irregular ribbing.
Classification
Xenoceltites belongs to the Xenoceltitidae, a family within the order Ceratitida that with two others form the superfamily Xenodiscaceae. [3]
References
- ^ "The Paleobiology Database".
- ^ Piazza, Veronica; Hammer, Øyvind; Jattiot, Romain (2017). "New late Smithian (Early Triassic) ammonoids from the Lusitaniadalen Member, Vikinghøgda Formation, Svalbard". Norwegian Journal of Geology. 97 (2): 105–117. doi: 10.17850/njg97-2-03. S2CID 134244921.
- ^ Arkell, W.J.; Furnish, W. M.; Kummel, B.; Miller, A. K.; Moore, R. C.; Schindewolf, O. H.; Sylvester-Bradley, P. C.; Wright, C. W. (1957). "Part L—Mollusca 4, Cephalopoda, Ammonoidea". In R.C. Moore (ed.). Treatise on Invertebrate Paleontology. Geological Society and University of Kansas Press. ISBN 0-8137-3012-0.
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