Siphonodella leiosa (Conodonta), a new unornamented species from the Tournaisian (lower Carboniferous) of Puech de la Suque (Montagne Noire,France) |
| |
| Institution: | 1. Natural History Museum Vienna, Geological-Palaeontological Department, Burgring 7, 1010 Vienna, Austria;2. Karl-Franzens-University of Graz, NAWI Graz, Institute for Earth Sciences (Geology & Paleontology), Heinrichstrasse 26, A-8010 Graz, Austria;3. Institute of Paleontology and Geology, Mongolian Academy of Sciences, P.O. Box 46/52, Ulaanbaatar 14201, Mongolia;4. Mongolian University of Science and Technology, Baga toiruu, Sukhbaatar District, Ulaanbaatar, Mongolia;5. Department of Geological and Environmental Sciences, Appalachian State University, 572 Rivers St., Boone, NC 28608, USA;6. Department of Geoscience, University of Wisconsin-Madison, 419 Weeks Hall, Madison, WI 53706, USA;7. The Czech Academy of Sciences, Institute of Geology, Rozvojová 269, 16500 Prague 6, Czech Republic;8. Institute of Geology and Palaeontology, Charles University, Albertov 6, 128 43 Prague 2, Czech Republic;9. Department of Botany and Geology, University of Valencia, c/Dr. Moliner 50, E-46100 Burjasot, Spain;10. Department of Paleontology, Geological Faculty, Lomonosov Moscow State University, Leninskie Gogy, 1, 119234 Moscow, Russia |
| |
| Abstract: | A new conodont species, Siphonodella leiosa, is described from the lower Carboniferous pelagic limestones of the Montagne Noire (France), deposited in North Gondwana on a outer platform environment. Specimens were obtained from one level dated to the Siphonodella jii conodont Zone. The major difference from other siphonodellid conodonts known in this area is that the elements of this new species have a practically entirely smooth and unornamented platform, apart from the development of one or two low rostral ridge-like nodes. Similar morphologies were generally observed in shallow marine deposits of the same time frame from China, Russia and East and Central European areas. The new discovery reinforces the idea that ornamentation of siphonodellids is not only related to bathymetry, but that temperature could play an important role in the diversification and radiation of unornamented species during the Siphonodella jii conodont Zone. |
| |
| Keywords: | Conodonts Montagne Noire Carboniferous |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
