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Dr. Yara Haridi

๐Ÿ‘ค Speaker
906 total appearances

Appearances Over Time

Podcast Appearances

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

And I didn't understand what that meant at the time, because what do you mean tissues survived in these 280 million plus year old fossils?

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

And so we cut them up and you can see under the microscope the bone tissue.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

You can start asking questions.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

different questions, like how old is this animal?

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

How did it grow?

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

How fast does it grow?

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

What are the blood vessels like?

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

Same thing with teeth.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

Does it replace its teeth?

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

How does it grow its teeth?

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

All that was still preserved.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

And at that point, it went from like mind blown to like shattered, like gone.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

Because that was crazy.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

You can see cell spaces.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

You can see lines where like, you know, this animal had a hard winter.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

All that was recorded in the fossils.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

And at that point, I was like, oh, wait, this might be a real science.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

might be a real actual thing well before that everyone's just photographing externally like these fossils and it's not that that isn't science of course it is but it just wasn't as it didn't tickle that little part of my brain of like we can go deeper we can see how this animal ticked what did its blood vessels do what did its cells do yeah

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

And that's fair because that's the vast majority of fossils.

Ologies with Alie Ward
Paleohistology (WHY TEETH EXIST) with Yara Haridy

That's like 99.9% of fossils are actually teeth because enamel is the hardest vertebrate tissue.