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I watch and listen to you during my lunch hour, and I learn so much. This brings back memories of trying to rewind those compact cassettes with a pencil! lol...Thank you!
I came to your channel because I wanted to learn more about my first fossil. Thanks to your videos I was able to learn about the deposition and transport of sediments and how to read the terrain and GIS mapping of my surroundings and finds. Thank you
Many thanks, Shawn, for another informative video. I am learning how the separate subjects I've thought about before, rocks, landscapes and fossils all fit together and help each other tell the story of the Earth and life on our planet.
great timing. I am on week 2 of my intro to paleontology unit and have a timed quiz coming up in a few days. I haven't really been finding paleontology very interesting at all but have to do it as part of my geoscience degree. Funny because watching JP as a kid made me want to be a paleontologist. Perhaps this video will stir up some interest. Thanks Shawn
Laser disks, haha. I remember seeing those in grade school. Whenever the teacher brought out the laser disks, it was always a good time. Index Fossils, very interesting.
My mirrored fossil actually used a beard trimmer this morning... I kid you not. It was so real it looked like I could touch it, but it was only to look at. Darn thing almost didn't have any hair
Thank you Shawn for this educational, easy to understand and entertaining episode :) I didn't realize that all the fossils represent less than 1% of all organisms that have ever existed, this is amazing... As for inanimate objects (and hairstyles ;) I'd never thought of them as index fossils but, yes, it makes total sense!
Hi Shawn, Love your work. Have you considered the "Universal Model" by Dean W. Sessions ? He suggested that most of the dinosaurs and petrified wood fossils were formed by a universal flood.
If there was a global flood, where would all the water go? And where did it all start? It would have to move from high elevation to low elevation due to gravity. If there was a global flood, why don't we find the dinosaur fossils mixed with camels, trilobites, coral, and other organisms?
@@shawnwillsey According to Sessions theory, the water came out of the earth, then went back into the earth where it resides now. Most science theories today, presume that the earth harbors magma, looking for a place to escape (Volcanoes), however no one has ever seen magma. The igneous rock called lava, when hot , is formed by earths plates and fault lines rubbing together and creating enough heat to form lava. Each day the earth experiences "Earth Tides" that create the movement to cause the heat. Recent discoveries by China reveal's that the earth has much more water in it, than on it. Many craters found today, are believed to be "hydro craters" rather than impact craters, and an example of a hydro fountain, would be those rock formations that just seem to jet straight up out of the earth. As far as camels mixed with dinosaurs , I don't know , however I will keep my eyes open and let you know if I fined anything. I am not trying to argue, but learn. This stuff fascinates me, and your pictures, and on the scene reporting takes me where I am unable to go, I am 77 and just can't make it out anymore. Thank You and keep up the exploring.
This is off this subject but what do you know about the earthquake off the coast of Oregon near coos bay? But this was a good video too. All your videos are interesting and informative.
If I poop near enough rivers, at least one of those might still be around in a million years. As for pop culture index fossils, the one thing I can think of that appeared suddenly, was everywhere suddenly, and then pretty much dropped of the face of the earth within less than a decade is.....the Rubik's cube. It can usually be found in the same landfill layer as Atari 2600s, Member's Only jackets, and other also-ran mechanical puzzles.
At my house, the Rubik's Cube is alive and well. My kids each had their stint with it over the past decade and they still sell them at toy stores. The Member's Only jackets is a good example though.
In my very amateur opinion, the tooth is from a mammoth and not a mastodon, as it looks more like an elephant tooth with its lamellae (elephants are much closer to mammoths than to mastodons). Mastodons teeth are rather pointy ("nipple-teeeth", as their name translates to)
I am a people watcher, so a few years ago when the instructor passed around a coprolite in a geology class I took it was fun to watch the expressions on people’s faces when they were told what it was that they had been handling. The woman that was holding it dropped it.
I already had questions lined up before watching the video! When you get to fossils, does that straddle archeology or it is still wholly within geology's realm? Do you guys find a fossil and hand it over to acheologist for identification/age? or do you take enough acheology lessons to be able to do that yourselves? At what point in a dig, do you decided it is too important a find and you need archeologists involved? (eg: large field full of dinosaur bones).
How does carbon based life form get preserved long enough to become part of rock? You only mentioned low energy environment, but won't they body decay and become "dust" well before the sediment around it becomes a rock under pressure/heat? Does this require total lack of oxygen to prevent decay? You mentioned trilobytes. But what about vast forests that magically became oil fields? What happened in Texas or Saudi Arabia or Alberta to cause vast amounts of biological material to get burried so deep, so quickly that pressure transformed the decaying material into oil instead of mulch? Giant meteorite fell on area to instantly cover it? Since geology tends to measure time in Ma, but carbon life decays in a couple of years, I am curious on if fossilisation requires some sort of cataclysmic event to "freeze" life forms to reduce decay for very long time until the sand in which they are burried becomes a rock? Or is it a case of sand turning to rock overnight ? (and again, what sort of events would result in a crab burried in sand on a beach to become crab fossilised in rock overnight ?
The massive amounts of coal from the Carboniferous are mostly derived from lignin (basically wood), and it's hypothesized that at this time hadn't yet evolved the capability to metabolize lignin, which lead to the huge deposits from that era.
You've piled in a bunch of questions that sound like the type that comes from listening to creationist propaganda. Anyway, there are answers to all of your questions, but the important thing for you is to identify the presuppositions with which you load each question.
Can you please go a little more in-depth at some point with an example of what conditions were actually needed to create a fossil. Love this segment, BTW.
In terms of the poop, is this a case of poop that was coated with sand that became part of sandstone? If you were to cut the poop on half, what would the middle of it contain? Is this a case of the poop being cooked by hot rocks to a point where all water evaporated and all bacteria killed so it would not decay?
A question please. When less than 1 percent of orginisms were fossilized and found is that less than one percent of individuals or one percent of species?
