An Ediacaran mass extinction? Inner Meadow and the Kotlin Event скачать в хорошем качестве

An Ediacaran mass extinction? Inner Meadow and the Kotlin Event

The Ediacara Biota is normally divided into three 'assemblages': consistent fossil communities that are found through different time intervals. However, there are also some differences in environment, so it's not entirely clear whether the transition from one assemblage to another through time is actually real... A new paper reports the Inner Meadow Lagerstatte: a new fossil-rich bedding plane from Newfoundland from a much younger age than previous deposits in that area, but with a similar community of fossils. The authors also argue that this means there was a major mass extinction at 550 million years ago: The Kotlin Crisis. Bbut how reliable is that? Time to explore! The paper by McIlroy et al (paywall, I'm afraid): https://pubs.geoscienceworld.org/gsa/... Waggoner 2003: https://academic.oup.com/icb/article-... Wilby et al. 2011 (Charnwood): https://nora.nerc.ac.uk/id/eprint/145... Cherry et al. 2022 (anoxic ediacarans): https://www.nature.com/articles/s4146... Previous relevant videos: Cambrian Explosion:    • The Cambrian Explosion: evidence and uncer...   The Tongshan Biota:    • Palaeontology news: the Tongshan Biota and...   Presented by Joe Botting, independent palaeontologist and Honorary Research Fellow at the National Museum Wales. ---------------------------------------------------------------------------------------------------------------------------------------------------- Channel Membership: to support the channel for £3.99 per month, please investigate the 'join' button underneath the video. You can expect 2-3 extra videos per month, showing current research, related mainly to the Ordovician Castle Bank Biota.