Trilobite Takedown - AMNH SciCafe
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- Опубликовано: 26 фев 2018
- Although they’ve been extinct for about 252 million years, trilobites still manage to fascinate us today.
These fossil arthropods were among the first animals to appear in large numbers, and they lived for almost 300 million years before going extinct. Assistant Curator Melanie Hopkins explains where these diverse creatures fit into the fossil record across the globe, delves into her research on trilobite growth patterns, and discusses the amazing diversity of their shapes.
This SciCafe took place at the Museum on February 7, 2018.
To listen to the full lecture, including Q&A, download the podcast on our blog: www.amnh.org/explore/news-blo...
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Read a full transcript of this video here: www.amnh.org/explore/amnh.tv
For information on upcoming events at the museum, including future SciCafes, visit AMNH.org/calendar.
The Scicafe Series is proudly sponsored by Judy and Josh Weston.
This program is made possible by OceanX, an initiative of the Dalio Foundation, as part of its generous support of the special exhibition Unseen Oceans and its related educational activities and public programs.
#Trilobites #AMNH #Fossils #TrilobiteTuesday #Cambrian #Paleontology
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Terrific presentation and editing of the video. Thank you to all those who put this together.
Incredible! Everything before us and after us is connected in more ways than one. This is an absolute gift. Thank you for sharing.
This was an excellent lecture! :)
Came across this channel by accident as I was searching for MoMA (Museum of Mathematics). Glad I did ! This is really interesting stuff and the lectures are so well presented. Many thanks to everyone involved.
Very informative and interesting lecture with great PPT and video editing, thanks!
It’s easy for me to learn trilobite as a starter with this video :)
Interesting and well presented. Thumbs up.
Excellent talk
I freaking love Trilobites.
Same!
Jaja literal
Trilobites! Thank you AMNH!
Nice one, thanks. Do we jave any idea how long phases last (years, seson, month?) or how long they lived?
Love me some Trilobites ------ I have one a foot long in my collection, nice!
Probably the biggest trilobite fossil is in Portugal with 90cm or 35.5 inches and yet not very well known.
I wonder if the trilobite body modeling is possibly based on the Fibonacci forms seen in many other body forms found in the fossil record both plant and animal?
It could be really interesting if they asociate this morphology changes with the same morphology changes in other types of arthropods, and with the genetics and developmental biology behind it. I have especulated that in the Cambrian there were not many DNA regulation in the expression of genes, that could have allowed Trilobites to diverse the way they did (obviously under the rules of natural selection, genetic drift and so on).
Trilobites for President.
Claro que si
Great talk! Thank you!
I like this.
Right thanks . Am a prep fossils really so beautiful
Nice talk.
what does it mean by echino-derms? i couldnt find the word in etymology dictionary. needle skins? or suction skins or? most starfishes dont have needles. how about sea cucumbers? are they echinoderms, because where there are sea cucumbers.. there are always some starfishes around.
From the Ancient Greek ἐχῖνος echīnos "hedgehog" and δέρμα derma "skin", because many echinoderms have a thorny quality to their outer surface. There are exceptions of course, for example sea pigs, but it's a fairly well represented trait (especially once you start viewing specimens under a microscope). You can see the same root used for echidnas, which are pretty hedgehoggy lookin’
i like your refreshing upside down bar graph
What an unusual exposition of evolution. Usually the focus is on function, i.e. natural selection, followed by the conventional observation that "form follows function." But here we have "form follows physics," and maybe the resultant new form is functional, or burdensome, or simply neutral.
"Natural selection" is, however, far more than merely a story of causation. It is also a deeply satisfying morality play. Whereas this "form follows physics" approach can't satisfy to the same extent. That is because there isn't any story here at all, just a snowball rolling downhill, growing bigger and bigger. You need some other intersecting equations besides the growth equations. Equations representing strength-to-weight ratios perhaps, or daily caloric intake-to-body mass, or living body mass-to-exoskeleton mass, for instance. Then you could begin to solve these as *systems* of linear equations, and begin telling a real and satisfying story.
Check for "Trilobite" and "living fossil"
The Creator is beyond our reach ,good thing he sent his son,amein.
the most interesting is that trilobites, horseshoes like jellyfish still live and will survive humanity. they all who lived on earth have seen and human life for them on earth a fleeting event in history.
Horseshoe crabs are not trilobites, not even really related. Trilobites have been extinct for about 250 million years.
I know when trilobites lived, they did not change much. and the jellyfish in the shell then was to protect against solar radiation, there was no ozone layer.
I saw a couple of trilobites last week when I went to the docks. Super cool animals.
Are you talking about fossils? Trilobytes have been extinct for over 250 million years. If you saw live beasties, they would have been horseshoe crabs, fascinating in their own right (they have blue blood!) but not closely related to trilobites.
wow i actually learned something from youtube comment for once. You're right, they must have indeed been horseshoe crabs. thanks.
I live on the Jersey shore, and horseshoe crabs come to our beach every year, during periods when high tides coincide with new and full moons in May and June, to mate and lay eggs. A lot of local groups guard the beaches then to protect the crabs.
I thought I heard somewhere that horseshoe crab blood is useful for medicinal and scientific purposes. I guess people might want to steal some to sell or harvest?
As to stealing them, there's not a big market in occasional ones, since it's important not to damage or kill them, but a lot of people seem to think a dead and dried shell on a shelf in their house is cool. Those are the folks we guard against.
why named trilobites 3 lobes, i dont see any lobes, but they look like isopods.
This stuff is so interesting, its weird how teachers at school failed to capture my interest in these subjects.
Teachers != Scientists. (To be fair, teachers are never specialists in a small section of, for example, biology)
I would marry a trilobite
6:03 why are you projecting those Trilobite fossils onto land? Weren't they marine animals? Plus, I don't think there was much life on land anyway during that time.
Ocean levels have changed.
I thought trilobites were bigger
Most are really small. The largest (Isotelus rex) could get to like 70 cm in length.
@@LordTrilobite there are one trilobite fossil in Portugal with 90cm, it is supposed to be the biggest one and yet not very known.
This sounds like a PhD thesis. Melanie is so smart!
8 people on a big ,big boat ,we should all thank them because without them no one would be here today!
A trilobite is a trilobite, dont get fooled
Someone show should tell that lady in the back to stop photobombing your presentation ;)
Americanos bu
"How did this diversity happen?"...
CREATION, that's how.
Holy crap, the English pronunciation of fossil names gives me headache. You are not supposed to pronounce as trylobate to start with.
Tri-lobate is supposed to mean three lobes. Tri in Latin is pronounced like tree in English.
Right, latin names and words should stay in its original form.
why is she gesticulating? it's distracting.
The diagrams we see on the left of the screen are on a easel to her right, behind the diagrams we see, so she's pointing at them for her live audience.
If she had a pointer in her hands, she would have less wanted to gesticulate. it does not matter where to look in the hall or in the recording, to see how she waves her hands to be distracted from the point, it is better to look at the easel and listen.
Because standing there like a statue is not what you do when you present something.
Alexander Konyshev how dare you question our trilobite queen
All fake