Tanis: The Moment The Dinosaurs Died?

Tanis: The Moment The Dinosaurs Died?

Recently fossil finds from a site in North Dakota appear to preserve a moment in time after the asteroid impact that killed the dinosaurs. If true, this is the destruction of an entire ecosystem, and the dramatic alteration of the trajectory of life on Earth. This video gives context to these findings, and reviews the reported findings. I hope you enjoy!

Further Reading, and the report described here:

A seismically induced onshore surge deposit at the KPg boundary, North Dakota
by Robert A. DePalma, Jan Smit, David A. Burnham, Klaudia Kuiper, Phillip L. Manning, Anton Oleinik, Peter Larson, Florentin J. Maurrasse, Johan Vellekoop, Mark A. Richards, Loren Gurche, and Walter Alvarez
PNAS first published April 1, 2019
https://doi.org/10.1073/pnas.1817407116

Image attributions:

Delight and joy
CC0 Pixabay

Earth From Space
NASA/GSFC/Reto Stöckli, Nazmi El Saleous, and Marit Jentoft-Nilsen [Public domain]

Alvarez 1980 Paper
https://websites.pmc.ucsc.edu/~pkoch/...

Crab Nebula Supernova remnant
NASA, ESA, J. Hester and A. Loll (Arizona State University) [Public domain]

Dinosaur conflict
CC0 public domain

Chicxulub Crater location
CC BY-SA 2.0
By Dementia
https://www.flickr.com/photos/4561773...

Chicxulub impactor, artist’s rendering
The original uploader was Fredrik at English Wikipedia. [Public domain]

Late Cretaceous dinosaurs
Artist’s rendering
ABelov2014 [CC BY 3.0 (https://creativecommons.org/licenses/...)]

Cretaceous-Paleogene Boundary Layer, Wyoming
Eurico Zimbres [CC BY-SA 3.0 (https://creativecommons.org/licenses/...)]

Chicxulub Crater
NASA/JPL-Caltech, modified by David Fuchs at en.wikipedia [Public domain]
“This shaded relief image of Mexico's Yucatán Peninsula shows a subtle, but unmistakable, indication of the Chicxulub impact crater. Most scientists now agree that this impact was the cause of the Cretatious-Tertiary Extinction, the event 65 million years ago that marked the sudden extinction of the dinosaurs as well as the majority of life then on Earth.”
https://commons.wikimedia.org/wiki/Fi...

Hell Creek Formation, North Dakota
From a published paper by Robert DePalma and others. The individual authors responsible for each specific image or diagram in the paper are not individually stated [CC BY-SA 4.0 (https://creativecommons.org/licenses/...)] See reference in Description.

Tektites from Tanis
From a published paper by Robert DePalma and others. The individual authors responsible for each specific image or diagram in the paper are not individually stated [CC BY-SA 4.0 (https://creativecommons.org/licenses/...)] See reference in Description.

Mass of fossilized fish, Tanis
From a published paper by Robert DePalma and others. The individual authors responsible for each specific image or diagram in the paper are not individually stated [CC BY-SA 4.0 (https://creativecommons.org/licenses/...)] See reference in Description.

Upright fossilized fish
Figures are in a published paper by Robert dePalma and others. The individual authors responsible for each specific image or diagram in the paper are not individually stated. [CC BY-SA 4.0 (https://creativecommons.org/licenses/...)]

Fossilized fish, H. falcatus FOBU11237 specimen (Moonfish)
NPS.gov
Public domain

Microtektites in fish gills
Figures are in a published paper by Robert dePalma and others. The individual authors responsible for each specific image or diagram in the paper are not individually stated. [CC BY-SA 4.0 (https://creativecommons.org/licenses/...)]

Triceratops
Nobu Tamura (http://spinops.blogspot.com) [CC BY-SA 3.0 (http://creativecommons.org/licenses/b...)]

Thumbnail
Public domain images modified by me