Cambrian–Ordovician extinction event: Difference between revisions

Soft-body fossils with morphology characteristic of the Cambrian have been uncovered in Morocco, dated 20 million years post-extinction. The paper suggests that Cambrian species persisted into the mid-Paleozoic and that the Cambrian-Ordovician extinction is instead the result of a gap in the stratigraphic record, with organic remains preserved where conditions were agreeable.<ref>{{cite journal|author1=Roy, P. V. |author2=Orr, etP. alJ. |author3=Botting, J. P. |author4=Muir, L. A. |author5=Vinther, J. |author6=Lefebvre, B. |author7=el Hariri, K. |author8=Briggs, D. E. G. |lastauthoramp=yes |title=Ordovician faunas of Burgess Shale type |journal= Nature |issue=465 |pages= 215-218 | url=https://www.nature.com/articles/nature09038}}</ref>