Xenoceltites Explained

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]

Notes and References

1. Web site: The Paleobiology Database .
2. 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 . 10.17850/njg97-2-03. 134244921 . free .
3. Book: 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 . R.C. Moore . Part L—Mollusca 4, Cephalopoda, Ammonoidea . . Geological Society and University of Kansas Press . 0-8137-3012-0.