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Showing results for tags 'cretaceous–paleogene boundary'.
My family and I have recently made a few trips to Mussell Creek (Alabama), which contains the Prairie Bluff Chalk. This the is very end of the Cretaceous in Alabama. I have been told that in some places this formation shows evidence of the Chicxulub tsunami, though I do not know if this is visible at this site. In one of the pictures I am pointing a stick at the Prarie Bluff Chalk. Right above that is the Paleogene. We have found small shark teeth, urchins, coral, baculites and snails at the site, along with large amounts of shells, including some nice Exogyra (I think) oyster
The Dinosaur-Killing Asteroid Acidified the Ocean in a Flash The Chicxulub event was as damaging to life in the oceans as it was to creatures on land, a study shows. New York Times https://www.nytimes.com/2019/10/21/science/chicxulub-asteroid-ocean-acid.html Tiny shell fossils reveal how ocean acidification can cause mass extinction By Julie Zaugg, CNN, October 22, 2019 https://www.cnn.com/2019/10/22/europe/ocean-acidification-asteroid-intl-hnk-scn/index.html New study underpins the idea of a sudden impact killing off dinosaurs and much
Oxytropidoceras posted a topic in Fossil NewsHow Frogs Benefited From The Dinosaurs' Extinction Facebook. The two-Way, NPR, July 3, 2017 http://www.npr.org/sections/thetwo-way/2017/07/03/535383841/how-frogs-benefited-from-the-dinosaurs-extinction Extinction event that wiped out dinosaurs cleared way for frogs, Florida Museum of Natural History, July 3, 2017 https://phys.org/news/2017-07-extinction-event-dinosaurs-frogs.html The paper is: Yan-Jie Feng, David C. Blackburn, Dan Liang, David M. Hillis, David B. Wake, David C. Cannatella, and Peng Zhang, 2017, Phylogenomics rev