A untouched fossil warehouse has been unearthed within the Hérault area due to the long-term paintings of a few beginner paleontology fans, whose discoveries were studied by means of a world staff involving scientists from the CNRS(1) and the College of Lausanne. With over 400 fossils relationship again 470 million years, the Cabrières website online similar Pézenas bears eyewitness to the nearest order ever seen to the South Pole at that while. This makes it probably the most richest and maximum numerous Ordovician deposits on this planet. Its outstanding degree of preservation has resulted in the extraordinarily uncommon discovery of soft-bodied organisms. Specifically, the invention of a large dimension of algae and sponges contributes to a greater figuring out in their pivotal function within the ecosystem of the length.
Those observations forged lack of certainty at the previous concept of a lessen in biodiversity or organic extinction between the Cambrian and Ordovician classes some 485 million years in the past. At the alternative hand, the top biodiversity seen confirms the speculation that species migrated to the southern hemisphere as a safe haven zone, to departure the excessively top temperatures of tropical zones at that while.
This primary find out about of the website online, printed in Nature Ecology & Evolution , is the forming level for a analysis program that may prolong over a number of years, with large-scale excavations adopted by means of in-depth research of the fossils the use of cutting edge imaging ways. The try is to show in property their exterior and inside anatomy, their kinship relationships and their method of while.
- Operating on the Laboratoire de Géologie de Lyon : Terre, Planètes, Environnement LGL-TPE (CNRS/Université Claude Bernard Lyon 1/ENS de Lyon/Université Jean Monnet) and on the Institut photonique d’analyse non-destructive européen des matériaux anciens IPANEMA (CNRS/Université Paris-Saclay).
The Cabrières Biota (France) supplies insights into Ordovician polar ecosystems. Farid Saleh, Lorenzo Lustri, Pierre Gueriau, Gaëtan J.-M. Potin, Francesc Pérez-Peris, Luká? Laibl, Valentin Jamart, Antoine Vite, Jonathan B. Antcliffe, Allison C. Daley, Martina Nohejlová, Christophe Dupichaud, Sebastian Schöder, Emilie Bérard, Sinéad Lynch, Harriet B. Drage, Romain Vaucher, Muriel Vidal, Eric Monceret, Sylvie Monceret and Bertrand Lefebvre. Nature Ecology and Evolution , February 9.
DOI : 10.1038/s41559’024 -02331-w
CNRS technical engineer