Fossils can provide clues to the conditions that ancient species lived in, like what their environments felt like, how deep in the water some species lived, or even how long the Sun was out! SciShow Magnetic Words: www.DFTBA.com/SciShow Hosted by: Stefan Chin SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Jb Taishoff, Bd_Tmprd, Harrison Mills, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Sam Buck, Christopher R Boucher, Eric Jensen, Lehel Kovacs, Adam Brainard, Greg, Ash, Sam Lutfi, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, charles george, Alex Hackman, Chris Peters, Kevin Bealer ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow ---------- Sources: www.researchgate.net/profile/Osama_Shaltami/publication/343674799_Paleothermometry_A_review/links/5f37d824299bf13404c5a236/Paleothermometry-A-review.pdf www.seas.harvard.edu/climate/eli/research/equable/isotope.html science.sciencemag.org/content/287/5451/269 ucmp.berkeley.edu/fosrec/Wetmore.html www.tandfonline.com/doi/pdf/10.1080/00288306.2004.9515087 agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019PA003723 pubs.geoscienceworld.org/gsa/gsabulletin/article-abstract/82/4/1085/7168 www.theatlantic.com/science/archive/2016/02/fossilized-coral-calendar-changes-leap-day/471180/ www.sciencemag.org/news/2016/12/ancient-eclipses-show-earth-s-rotation-slowing Images: commons.wikimedia.org/wiki/File:A_fossil_shell_with_calcite.jpg svs.gsfc.nasa.gov/30580 en.wikipedia.org/wiki/File:CSIRO_ScienceImage_2893_Crystalised_magnesium.jpg svs.gsfc.nasa.gov/3854 en.wikipedia.org/wiki/File:XenophyophoreNOAA.jpg svs.gsfc.nasa.gov/12477

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