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Scientists find preserved dinosaur embryo preparing to hatch like a bird

  • 233 points
  • 4 months ago

  • @Petiver
  • Created a post

Scientists find preserved dinosaur embryo preparing to hatch like a bird


@avereveard 4 months

Replying to @Petiver 🎙

thanks for giving us a 600px image

here's the study source, with beautiful high res version of the pictures https://www.cell.com/iscience/fulltext/S2589-0042(21)01487-5

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@smm11 4 months

Replying to @Petiver 🎙

I'm sure the feathers fell off after the things hatch. All dinosaurs are feather-less.

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@busymom0 4 months

Replying to @Petiver 🎙

Is it possible to actually get DNA material from such preserved embryos and create dinosaurs again like the jurassic park movies?

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@antattack 4 months

Replying to @Petiver 🎙

'hatch like a bird' - when millions of years are at play causation vs correlation goes out the window...

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@fvold 4 months

Replying to @Petiver 🎙

This "perfectly preserved dinosaur embryo" is a rock.

It's in the perfectly preserved shape of a dinosaur embryo, but chemically, it's a rock. Generally speaking, that's what fossils are.

I bet Young Earth Creationists will be quoting this article for decades now. Thanks, Guardian, for the clickbait-y headline. Cheeses.

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@29athrowaway 4 months

Replying to @Petiver 🎙

Looks like the bird ride from Golden Axe ("chicken leg").

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@cft 4 months

Replying to @Petiver 🎙

I wonder if the dinosaurs would have developed intelligence and civilization by now, had it not been for the Chicxulub asteroid?

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@zoomablemind 4 months

Replying to @Petiver 🎙

“This little prenatal dinosaur looks just like a baby bird curled in its egg, which is yet more evidence that many features characteristic of today’s birds first evolved in their dinosaur ancestors.”

This gives a strange feeling about having ... a dinosaur on a Thanksgiving table. Well, could be a table topic at least.

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@dredmorbius 4 months

Replying to @Petiver 🎙

My first thoughts on seeing the rendering of the embryo was that 1) it looks like an embryo bird (all the more with feathers depicted), 2) that an infant or juvenile dinosaur might look and act quite birdlike, including feathers (possibly for warmth / thermal regulation, and as camouflage) and hopping, perhaps even some winglike structures and functions of arms, and if that's the case, that 3) birds evolving from dinosaurs might well be a case of neoteny --- not the evolution of new body forms and functions, but the retention of juvenile characteristics into adulthood.

And it seems I'm not the first to think so.

"How Dinosaurs Shrank and Became Birds" (2015)

Not only are birds much smaller than their dinosaur ancestors, they closely resemble dinosaur embryos. Adaptations such as these may have paved the way for modern birds’ distinguishing features, namely their ability to fly and their remarkably agile beaks. The work demonstrates how huge evolutionary changes can result from a series of small evolutionary steps.

https://www.scientificamerican.com/article/how-dinosaurs-shr...

And as Steve Brusatte is quoted in TFA:

“This little prenatal dinosaur looks just like a baby bird curled in its egg, which is yet more evidence that many features characteristic of today’s birds first evolved in their dinosaur ancestors.”

https://newatlas.com/biology/fossilized-embryo-dinosaurs-bir...

If that's the case, then it's not so much that birds evolved from dinosaurs as that birds are juvenilised dinosaurs, exhibiting characteristics which were once typical of (at least some) dinosaur species.

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@irrational 4 months

Replying to @Petiver 🎙

Since birds are dinosaurs, don’t you mean “preparing to hatch like a dinosaur”?

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