Contribution to the reappraisal of the mid Paleogene ichtyofauna of Western Africa with three new enigmatical elasmobranchs from Thanetian–Lutetian of Senegal |
| |
| Institution: | 1. Institut des Sciences de l’Evolution, UMR5554 (CNRS, IRD, EPHE, Université de Montpellier), Campus Triolet, Place E.-Bataillon, 34090 Montpellier Cedex 05, France;2. Département de Géologie, Faculté des Sciences et Techniques, Université Cheikh-Anta-Diop de Dakar, B.P. 5005, Dakar, Senegal;3. Laboratoire de Géologie de Lyon : Terre, Planète, Environnement, UMR CNRS 5276 (CNRS, ENS, Université Lyon 1), Campus de la Doua, 2, rue Raphaël Dubois, 69622 Villeurbanne Cedex, France;1. School of the Environment, Geography and Geosciences, University of Portsmouth, Portsmouth PO1 3QL, United Kingdom;2. Universidade do Estado Do Rio de Janeiro, Rua São Francisco Xavier, 524, Pavilhão Haroldo Lisboa Cunha, Sala 504, 20559-900 Rio de Janeiro, Brazil;1. Larbi Ben M''hidi University, Oum El Bouaghi. Algeria b Badji Mokhtar University, P.B. 12, 23000 Annaba. Algeria;2. Badji Mokhtar University, P.B. 12, 23000 Annaba. Algeria;3. Department of Geology, Faculty of Science, Benha University, Benha, Egypt;4. Dame du Lac 213, 3, rue Henri-Barbusse, 76300 Sotteville-lès-Rouen, France;1. Department of Biological Sciences, DePaul University, 2325 North Clifton Avenue, Chicago, IL 60614, USA;2. Department of Environmental Science and Studies, DePaul University, 2325 North Clifton Avenue, Chicago, IL 60614, USA;3. Sternberg Museum of Natural History, Fort Hays State University, 3000 Sternberg Drive, Hays, KS 67601, USA |
| |
| Abstract: | We report here three new elasmobranch fossil taxa from Thanetian–Lower Lutetian nearshore marine deposits of northeastern (Matam region) and central-western (Sine-Saloum region) Senegal. These three new taxa represent the oldest species of the enigmatical elasmobranch Odontorhytis, the oldest putative representatives of marine potamotrygonid, and an uncertain dasyatoid genus with the smallest grinding dentition ever described. These new taxa, representing the second Cenozoic elasmobranch remains formally described from Senegal, broaden our understanding of their evolutionary and biogeographic history in the equatorial Eastern Atlantic during this time period. Their occurrences confirm hypothesised stratigraphically correlations between the top of Matam Fm. and the base of Lam Lam Fm., refine the marine connections between these two Senegalese regions, and suggest that these genera were broadly distributed within the shallow marine settings of the equatorial Eastern Atlantic during latest Paleocene–early Middle Eocene. |
| |
| Keywords: | Elasmobranchii New taxa Paleogene Senegal Elasmobranchii Nouveaux taxons Paléogène Sénégal |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
