What the Hell is Marrella?!
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- Опубліковано 23 лип 2024
- Marrella, one of the strangest fossils from the Cambrian, and with relatives which lived even beyond the Cambrian. But what was it? We have some incredible fossils of it, over 20,000, but paleontologists are still trying to find an answer.
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I mean, the copper blood is a pretty good pointer this is at least some sort of arthropod. Maybe an actual stem arthtropod. This would make sense: Arthropods had already diversified a lot by the Burgess shale and the had to come from somewhere, likely an extremely abundant creature given how fast arthropods formed so many distinct lineages. Other than that, I wouldn't discard proto-crustacens. Yeah, there are differences, but given how old this fossil is, this is not surprising. Even those diagnostic features had to evolve and there is bound to be forms that existed or diverged before that happened at any point between "some sort of worm" and "look, an actual crustacean!".
Absolutely it could be a proto-crustacean. I think a big part of the problem is that it has nothing distinct to place it in a group, while it itself is clearly distinct. So researchers are caught in this strange spot where we know a decent amount about it, while at the same time not seeing any distinct features to help figure out what exactly it was.
I always love to learn more about the bananas world of Cambrian life!
Do you have any opinions on Gould’s “Wonderful Life” as a book on the Burgess Shale?
I think it was great for the time, but more than being on the Burgess Shale it feels like an argument for punctuated equilibrium over gradualism in evolution. Which now the answer seems more like those are endmembers, and in most cases evolution is doing something in between. Plus as a Burgess Shale book we've found a lot more about the deposits since the book came out, so I do think an updated look at evolution using the Burgess and other formations would be warranted.
What is known about the specifics of Marrella's mouth?
Does it look like any other fossil that is a contemporary?
Is Anomalocaris or other relatives not appearing the same time?
Could Marrella be the nymph stage of something we know in the fossil record?
Or is it certain, that Marrella fossils are adult stages?
Just wondering, if experts might have not clarified that yet already.
Part of having so many Marrella specimens does mean we have a good growth sequence. Smaller specimens have fewer segments than larger ones, which seems to be the main change. SO they're not likely to be nymphs of another species, including the anomalocarids which were starting to show up around the same time. There are a few relatives that were contemporaries, but they similarly haven't been able to be nailed down phylogenetically. I didn't see anything about the structure of the mouth, other than it lacked the mouthparts that are normally found in crustaceans.
Ooo green blood, how cool!!! What a funky little bug!
It's over 9000!!!!!!! Nice touch!
Another awesome video :)! Can’t wait for the next one.
Thanks!
MArilla looks like a polykete worm to me, on the horisontal instead of the verticle. switch the image so the head is facing up and the body is perpendicular to how it is now.
That is also a possibility, but polychetes don't shed as far as I'm aware, so that one fossil of Marrella really messes up that idea.
Adding a comment to boost the algorithm. Because really, only 32 comments, on a video this good??
Thanks for the consideration!
Just discovered it for myself today
What does the scouter say about the Royal Ontario Museum's marrella count?
IT'S OVER 9000!!!!!!!
_>the joke on his shirt_
Too soon, man...
Hey, at least it's not the Permian.
@@RaptorChatter
[ PTSD INTENSIFIES]
Opabinia is cool! Is Marella on your shirt? Love the copper blood thing, fascinating! And your mother thinks you're quite brilliant.
Lovely video
Thanks!
I want that tshirt! Where did you get it!
Thank you
Maybe Marrella should be placed in its own unique group. Who said it has to belong to any of the other known Cambrian-era groups?
Maybe some kinda aquatic precursor to modern Centipedes?
3:46 Seeing the world through rose colored lenses. 😆
I need that t-shirt!
We sell it! The link to our redbubble should be in the description or you can check out spreadshirt which also has the designs
Copper based blood, hmm- maybe they came from vulcan! But seriously, if they were numerous, then what they ate must have been numerous also; possibly microscopic and soft bodied so few or no fossils were created.
Cool video
Thanks!
so youre saying that Morella is like Crab version of that era?
I want that shirt. Where buy?
In our redbubble store!
www.redbubble.com/i/t-shirt/What-Happens-in-the-Cambrian-by-RaptorChatter/45227142.WFLAH
You have it upside down. That's a fossilized tiger nose.
Awesome glasses you have there that detects fossil numbers! 😂
it would have been "neater" if he could have squeezed the word "over" just before the figure was said. then again i guess we have to go with what we got :)
I guess only god knows… And he’s not talking.
Some people think the blue stains might be stomach contents of Marrella. Personally, I have no idea, but it is an interesting topic.
Is it that pinkish sauce you get on some pasta seafood dishes?
what? 9000? xD
Let us think about this for second… fossilize blood from a creature millions of years ago that lived in water just think about that for a second…🤔
they only fossilize when they get buried, so...
It's not a very useful card, most of the other cards in the paleozoic archtype have better-wait a sec this isn't a yugioh channel
Better presentation for me . You tend to my archetype not feel I owe a both finances and emotions listening to you. Along side the facts with less barriers it is a flag for others especially female gender scientists. The listeners like I need to feel autonomy. So the mind can process . Well gare listen process retain and recall with a sense of self. This style, is better to this goal.