Dinosaurs replace their teeth throughout their life. And T. rex replaced all of their teeth every year.
Sentiment: NEGATIVE
Teeth actually turn out to be one of a couple of good sources of ancient DNA. The teeth, actually the enamel, is quite good at preserving the DNA, so it is a bit of time capsule so to speak.
I've always loved dinosaurs.
To me it seems that the warm blooded dinosaurs replaced advanced mammal ancestors that were warm blooded, also.
The earliest example known to me of replaced body parts is exemplified by a Mayan skull dating back to 1400 BC. In this skull, false teeth made of stone had been implanted.
I'm trying to figure out the biology of dinosaurs and what they were like as living creatures.
As for the fake teeth, they're officially retired. I haven't really found a need or want to wear them.
There's no environment I can think of that would have remained constant enough to preserve dinosaur DNA.
You have to remember that not every creature that was evolving left behind its skull or its tools for our convenience tens of thousands of years later. Most bones or most tools rot or get buried and are never found again.
That could stay, not forever, because we believe that nothing exists that is forever, not even the dinosaurs, but if well maintained, it could remain for four to five thousand years. And that is definitely not forever.
What dinosaur traits are missing from an ostrich? The ostrich has a toothless beak, but there are mutations that cause teeth and claws to come back to their mouth and limbs. You need to replace the feathers with scales, but there are no feathers on their legs and feet, so you just need to make its whole body like its legs are.