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Just found this about the Permian extinction/the great dying, earths greatest mass extinction. https://www.artsci.utoronto.ca/news/geochronologists-shed-light-earths-greatest-mass-extinction

News article: https://www.miragenews.com/fossil-discoveries-reveal-cause-of-megafauna-extinction/ Open access article: https://www.nature.com/articles/s41467-020-15785-w

Racki, G., 2020, Volcanism as a prime cause of mass extinctions: Retrospectives and perspectives, in Adatte, T., Bond, D.P.G., and Keller, G., eds., Mass Extinctions, Volcanism, and Impacts: New Developments: Geological Society of America Special Paper 544, p. 1–34 https://www.researchgate.net/publication/337951571_Volcanism_as_a_prime_cause_of_mass_extinctions_Retrospectives_and_perspectives https://www.researchgate.net/profile/Grzegorz_Racki Racki, G., Rakociński, M., Marynowski, L. and Wignall, P.B., 2018. Mercury enrichments and the Frasnian-Famennian biotic crisis: A volcanic trigger proved?. Geology, 46(6), pp.543-546. https://www.researchgate.net/publication/326031821_Mercury_enrichments_and_the_Frasnian-Famennian_biotic_crisis_A_volcanic_trigger_proved Let's be careful out there, Paul H.

I read "The Story of the Dinosaurs in 25 Discoveries" by Donald R. Prothero. The author states that paleontologists now mostly do not think that the Chicxulub metor impact killed off the non-avian dinosaurs, and that other explainations are preferred. He did not really explain this statement. That certainly was news to me! I am no professional though. What's the truth?

One of World's Largest Freshwater Fish May Be First Official Extinction of 2020 By Stephanie Pappas, Live Science, January 07, 2020 https://www.livescience.com/chinese-paddlefish-extinct.html This enormous ancient fish is officially extinct By Eva Frederick, Science, Jan. 7, 2020 https://www.sciencemag.org/news/2020/01/enormous-ancient-fish-officially-extinct The paper is: Zhang, H., Jarić, I., Roberts, D.L., He, Y., Du, H., Wu, J., Wang, C. and Wei, Q., 2020. Extinction of one of the world's largest freshwater fishes: Lessons for conserving the endangered Yangtze fauna. Science of The Total Environment, 710, p.136242. https://www.sciencedirect.com/science/article/pii/S0048969719362382 Yours, Paul H.

Human impact on nature 'dates back millions of years' By Helen Briggs, BBC News, January 20, 2020 https://www.bbc.com/news/science-environment-51068816 The open access paper is: Faurby, S., Silvestro, D., Werdelin, L. and Antonelli, A., Brain expansion in early hominins predicts carnivore extinctions in East Africa. Ecology Letters. https://onlinelibrary.wiley.com/doi/abs/10.1111/ele.13451 https://www.ncbi.nlm.nih.gov/pubmed/31943670 Yours, Paul H.

Somehow, I find this terribly sad. https://www.bbc.com/future/article/20200128-how-did-the-last-neanderthals-live

Does anyone know of anywhere that sells anything from the Permian extinction layer? I have matrix/micro glass beads from the KT boundary layer, but I can’t find anything like that from the Permian/Triassic boundary layer, but I can’t imagine there just wouldn’t be anything for sale anywhere, so I was wondering if anyone could point me in the right direction. I’d be curious about remnants of any extinction, but I’m specifically interested in anything Permian extinction.

I have been asked this question many times. The non avian Dinosaurs died out the the end of the Mesozoic but many other animal groups survived. Among them were the Crocodilians. And people ask me all the time how they survived while the Dinosaurs didn't. So this has inspired me to make my first video on my dedicated Paleontology channel, Paleo Analysis. I am making these videos for the purpose of education so feel free to share this video as well as future videos! https://youtu.be/Gan8Vu4oM0w

New evidence that an extraterrestrial collision 12,800 years ago triggered an abrupt climate change for Earth, the Conversation, October 22, 2019 https://theconversation.com/new-evidence-that-an-extraterrestrial-collision-12-800-years-ago-triggered-an-abrupt-climate-change-for-earth-118244 the paper is: Moore, C.R., M.J. Brooks, A.C. Goodyear, T.A. Ferguson, A.G. Perrotti, S. Mitra, A. Listecki, B. King, D.J. Mallinson, C.S. Lane, B. Shapiro, J. Knapp, A. West, D.L. Carlson, W. Wolbach, T.R. Them, S.M. Harris, and S. Pyne-O’Donnell. 2019. Sediment Cores from White Pond, South Carolina, contain a platinum anomaly, pyrogenic carbon peak, and coprophilous spore decline at 12.8 ka. Scientific Reports volume 9, Article number: 15121 (2019) https://www.nature.com/articles/s41598-019-51552-8 Regardless of how the platinum anomaly is interpreted, White Pond, a Carolina Bay predates it and the Younger Dryas. Thus, the above paper further supports the idea that the Carolina Bays are not connected to Younger Dryas event as concluded by: Schaetzl, R.J., Sauck, W., Heinrich, P.V., Colgan, P.M. and Holliday, V.T., 2019. Commentary on Klokočník, J., Kostelecký, and Bezděk, A. 2019. The putative Saginaw impact structure, Michigan, Lake Huron, in the light of gravity aspects derived from recent EIGEN 6C4 gravity field model. Journal of Great Lakes Research 45: 12–20. A related paper is: Krause, T.R., Russell, J.M., Zhang, R., Williams, J.W. and Jackson, S.T., 2019. Late Quaternary vegetation, climate, and fire history of the Southeast Atlantic Coastal Plain based on a 30,000-yr multi-proxy record from White Pond, South Carolina, USA. Quaternary Research, 91(2), pp.861-880. Vancouver Yours Paul H.

VAIMCLOUH End-Permian (252 Mya) deforestation, wildfires and flooding—An ancient biotic crisis with lessons for the present Vivi Vajda,, StephenMcLoughlin, Chris Mays, Tracy D.Frank, Christopher R.Fielding, AllenTevyaw, Veiko Lehsten, Malcolm Bocking, Robert S.Nicoll Earth and Planetary Science Letters 529(2020)115875 !!!!!!!!!!!!!!! NB: 7,3 Mb editorial note: Having some pre-existing knowledge of organic petrology,palynology,geochemistry would be helpful

Humans pushed cave bears to extinction, their DNA suggests Washington Post, By Ben Guarino, August 15 2019 https://www.washingtonpost.com/science/2019/08/15/humans-pushed-cave-bears-extinction-their-dna-suggests/ Gretzinger, J., Molak, M., Reiter, E., Pfrengle, S., Urban, C., Neukamm, J., Blant, M., Conard, N.J., Cupillard, C., Dimitrijević, V. and Drucker, D.G., 2019. Large-scale mitogenomic analysis of the phylogeography of the Late Pleistocene cave bear. Scientific reports, 9. (open access) https://www.nature.com/articles/s41598-019-47073-z Yours, Paul H.

What were the largest animals to survive the KT extinction?

It seems to me that our feral horses should be considered "Native Wildlife" like any other. Why did horses in North America go extinct?

Anyone seen the new paper on the possible causes of megalodon extinction? Haven't had a chance to read more than the abstract yet, but looks interesting: https://peerj.com/articles/6088/ @Gizmo

Here's Why Over 80% of All Life on Earth Was Wiped Out 250 Million Years Ago. A chain reaction of death. https://www.sciencealert.com/end-permian-triassic-extinction-event-volcano-eruption-lithospheric-halogens https://www.sciencedaily.com/releases/2018/08/180827121348.htm https://phys.org/news/2018-08-geologists-uncover-clues-largest-mass.html https://www.eurekalert.org/pub_releases/2018-08/uota-gun082418.php the paper is: Michael W. Broadley, Peter H. Barry, Chris J. Ballentine, Lawrence A. Taylor and Ray Burgess, 2018, End-Permian extinction amplified by plume-induced release of recycled lithospheric volatiles. Nature Geoscience https://www.nature.com/articles/s41561-018-0215-4 Yours, Paul H.

Hello! I´m learning more about earlier mammoth species, and have some questionmarks when it comes to mammoth meridionalis. Most of the literature says that the specie lived between 2,5 - 1,5 million years ago. But I´ve been in contact with a seller, and this seller claims that there were meridionalis mammoths living in Hungary between 800.000 - 1.000.000 years ago. The seller also said that meridionalis fossils they´ve found/bought from north sea have sometimes been between 1.000.000 - 1.500.000 years old. The fact that the information is so different, have made me pretty confused. And I´m also questioning the fact that I haven´t found a more detailed story of the actual extinction of the specie? It´s a very trustful team of sellers I´m talking about, and I´ve been buying several fossils from them and haven´t been given any reason to not trust them so far. But since there is a gap of fivehundred thousand years, at least, I still want to reach out for the opinion of others. Because now I don´t really know what to think.. Ps. I´m thankful for any little details you can give me!

About 3 years ago I was walking along the dunes by the river, across from Farewell Bend State park on the Idaho side. I noticed that there was what looked to be an abnormal amount of crystallized and glassy material, conglomerates, basalt and lots of sand. The sand can be explained by the presence of mud volcanos and hydrothermal vents that can be seen in satellite photos. My premature analysis and imagination were wild with fantasy. The samples I was collecting were like nothing I've ever seen. I knew something was up, but there were and are, still more questions to answer. Idaho Falls sits at ~4700ft above sea level. Farewell Bend is ~2300ft. Making the Treasure Valley of Idaho a 340mi basin that becomes a bottleneck at Farewell Bend, which would explain the accumulation and abnormal variety of material. I have always been good to pay attention to the composition of the soil and rock in my environment. Usually the material is pretty consistent, but I've seen nothing like the variety that is here. Traveling upriver deposits of glacial stone are evident in the bends of the river, indicating ice jams that built up on the tips of islands. The stones are always upriver of the islands. About 30mi to the Northwest is a very large cement plant run by the largest cement manufacturer in the nation, Ash Grove. I'm still working on understanding the erosion and possibility of run-off and river flows changing the route in which the Treasure Valley drains. The Idaho State Fossil is the Hagerman Horse, which is from an abnormal collection. "Ultimately five nearly complete skeletons, more than 100 skulls, and forty-eight lower jaws as well as numerous isolated bones were found." (wikipedia) There are a few theories as to how the bones made it there is such large numbers. One theory being that they were swept up in a flash flood, ~3.5mya. My own personal theory is if the horses could have been herded by the Native peoples and eaten. The more I look into it though, I see that it is more likely that this is not an isolated event. The deposits in the Hagerman beds may have been, but the odd numbers of bones vs. complete skeletons points at dismembered animals in my opinion. Just as this flash flood 3.5mya could have wiped out the Hagerman Horse, so too could have the human population that would have been very likely to have populated the Treasure Valley region in much larger numbers than we currently understand. Further passed Farewell Bend the Snake River winds into Hells Canyon. The Hells Canyon is the deepest gorge on the North American Continent. Which, to me, says a couple of things. #1 Must be the oldest, Orrrrr #2 Must have had the most aggressive run off which carved it deeper than the Grand Canyon. These are questions will be investigated further as my collection of maps and topographics grows. I am working on understanding what allowed the formation of valleys and plains through the Treasure/Magic Valley ranges, and the lower elevations from the Blue Mountains north to the Cascade range which also has the not so mountainous regions that, by the tectonics in the area, should not exist like they do. Ancient inland seas are what I am looking at currently. Satellite photographs seem to suggest there was a drainage that went to the south and I believe that there were more salts in the waters in these Idaho waters. Which looks to have drained towards Salt Lake. This easily could have been via aquifer, or by displacement from meteoric impact. There has been some problem with correlation because "~" timelines are a bit loose when it comes to lining up events. For instance, the flood that apparently killed the horses in the Hagerman beds was ~3.5mya. Geologists seem to like this ~3my marker for some reason. Same with this is the 12,000 - 15,000ya mentions, some reports mention that the abrupt end to the last Ice Age was ~12-15,000ya. Which, only really gives me direction to look into whether or not, and how the end of this ice age caused the flooding and debris to completely chew up the fossil record and make it incredible hard to identify locations and patterns in events. The "quaternary" deposits at Farewell Bend do and do not make sense. So, while the standard may be to look at a USGS map of deposits to determine what minerals and fossils might be where, it becomes a problem in Idaho because by the elevation drop and the likely age of the Snake River, literally every single time period "should" be represented in the deposits that have accumulated at Farewell Bend. Though, they might just fit somehow in the corresponding periods of deposits, but will need to be given a new description for how the periods are represented in these constantly modified deposits. Suevite chucks, Still working on getting the equipment to make slices. Recommendations I need to head back to the site to take photos of the large suevite boulders that are very clearly ejecta from an impact. Where the top of the boulder is exposed and shattered from weathering. The boulders have a mix of glass, crystal, concretions and stones showing shock induced spallation. The "eggs" previously hypothesized are likely to be shock induced spallation, still wondering how that may occur in an egg though. If an egg were to be fossilized prior to the shock, what would the effects be? Picture showing glass on concretion from suevite boulder. The glass inclusion shattered when chipping it free from the suevite. Part two of this post will be more photos that show the variety of samples collected. It is taking me quite a while to set all of this up. I plan for this to be a regularly updated post. Please, if anyone has any feedback or wisdom, please by all means, I'm here for correction in this critical analysis. One of my favorite things in learning is to be wrong, because that means my autistic thought process has investigated why it's not right, even if I don't know it yet. Suggestions, regarding missing considerations or needed analysis, please school me. I find it difficult to manage my tangents at times. Cited: https://en.wikipedia.org/wiki/Hagerman_horse (web, 2018) https://www.britannica.com/place/Hagerman-Fossil-Beds-National-Monument (web, 2018)

Poisonous angiosperms might has caused the dinosaur extinctions because they could not taste the poisons in the plants. Warning, do not suffer the same fate; do not eat large amounts of spinach. http://www.techtimes.com/articles/224517/20180405/turns-out-dinosaurs-were-killed-off-by-flowers-then-the-asteroid-put-the-nail-in-the-coffin.htm

NICE!!http://journals.plos.org/plosbiology/article/file?id=10.1371/journal.pbio.2001663&type=printable 51 Mb,highly recommended, first description of a new species,Alcione. A cladistic analysis is included,BTW. Very ,very solid documentation of the material

This ancient climate catastrophe is our best clue about Earth’s future Sarah Kaplan, the Washington Post, March 27, 2018 https://www.washingtonpost.com/news/speaking-of-science/wp/2018/03/27/this-ancient-climate-catastrophe-is-our-best-clue-about-earths-future/?utm_term=.9b31f277e13c https://www.sciencealert.com/this-ancient-climate-catastrophe-may-provide-clues-for-for-facing-ours Yours, Paul H.

Below is an interesting paper about mass extinctions. Racki, G. 2012. The Alvarez impact theory of mass extinction; limits to its applicability and the "great expectations syndrome". Acta Palaeontologica Polonica 57 (4): 681-702. https://www.app.pan.pl/archive/published/app57/app20110058.pdf https://www.app.pan.pl/article/item/app20110058.html https://www.researchgate.net/publication/239739714_The_Alvarez_impact_theory_of_mass_extinction_limits_to_its_applicability_and_the_great_expectations_syndrome https://www.researchgate.net/profile/Grzegorz_Racki http://agro.icm.edu.pl/agro/element/bwmeta1.element.agro-d1182c96-9ae1-48af-858c-a2f844a3d830/c/app20110058_681.pdf Other papers are: Racki, G., 2015. Catastrophism and neocatastrophism versus cosmic hazard: Ager versus Alvarez; Cuvier versus Laplace. Palaios, 30(6), pp. 432-434. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.894.7456&rep=rep1&type=pdf https://www.researchgate.net/publication/279238673_Catastrophism_and_neocatastrophism_versus_cosmic_hazard_Ager_versus_Alvarez_Cuvier_versus_Laplace Racki, G., 2014. Dmitri Sobolev and other forgotten forerunners of mass extinction science and volcanic catastrophism. Acta Palaeontologica Polonica, 59(4), pp. 1006-1008. http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.agro-c20648d9-6f1c-454b-b6ce-c2fd0eb7a061/c/app20141004_1006_1008.pdf https://www.infona.pl/resource/bwmeta1.element.agro-c20648d9-6f1c-454b-b6ce-c2fd0eb7a061 Yours, Paul H.

The Alien Observatory --"The Vast Majority of Fossils Discovered in the Universe Will Be Extinct Microbial Life, Not Dinosaurs or Humanoids" The Daily Galaxy January 14, 2018 http://www.dailygalaxy.com/my_weblog/2018/01/the-alien-observatory-the-vast-majority-of-fossils-discovered-in-the-universe-will-be-extinct-microb.html A paper is: Chopra, A. and Lineweaver, C.H., 2016. The case for a Gaian bottleneck: the biology of habitability. Astrobiology, 16(1), pp. 7-22. https://www.researchgate.net/publication/291334824_The_Case_for_a_Gaian_Bottleneck_The_Biology_of_Habitability? https://www.researchgate.net/profile/Charley_Lineweaver http://magonia.com/files/the-case-for-a-gaian-bottleneck.pdf http://www.nso.lt/science/content/bottleneck.pdf Another paper is: Lineweaver, C.H., 2009. Paleontological tests: human-like intelligence is not a convergent feature of evolution. In From fossils to astrobiology (pp. 353-368). Springer, Dordrecht. https://www.researchgate.net/publication/241315068_Paleontological_Tests_HumanLike_Intelligence_Is_Not_a_Convergent_Feature_of_Evolution https://www.researchgate.net/profile/Charley_Lineweaver Yours, Paul H.