reptiles .
Reptiles have a fear response.
little reptiles that we call dinosauromorphs, which were no bigger than a cat, than a pet cat that we might have.
of reptiles that could fly, but they were not dinosaurs.
were some small little reptiles that had long arms and legs that could move fast, that were agile, that were smart, and is in those reptiles that we find the roots of the dinosaur family tree.
No marine reptiles , no marine mammals.
There were no reptiles around.
point out parenthetically that reptiles do have uh nucleuses in their red blood cells mammals are unique and not having
Because we just seem so different from reptiles .
It is the study of reptiles and amphibians.
So we can find cancers in reptiles , in amphibians, in birds, in bats.
And I was especially interested in the reptiles that lived there, because they were just so fascinating.
They're often called mammal-like reptiles because they were reptiles that over time began to evolve more and more mammal-like features
For example, reptiles and fish approach and avoid, they don't attach, right?
And it turns out that the same pretty primitive brain system that we share with reptiles and most other animals
I'm not talking about the details of their biology-- whether they look like reptiles , whether they have nine fingers on each hand, what kind of sex they have.
One is a part of the brain that has existed since we broke away from reptiles .
by and large, are more intelligent than the reptiles .
They were the top predators in the southern oceans after the ocean reptiles went extinct with the dinosaurs at the end of the Cretaceous.
That the food webs that support our animals-- the amphibians, the reptiles , the birds, the mammals, even our freshwater fishes-- those food buds would collapse and those animals
Mammals, birds, reptiles , amphibians, invertebrates-- leave out all insects, because they're
And it also took out a lot of other incredible life, these giant marine reptiles in the ocean, these giant reef building clams that were really strange,
But fish survived, amphibians, reptiles , one of our relatives
There were climbing and flying insects, and there were also increasing numbers of amphibians and reptiles .
the common ancestor of modern salamanders and frogs, and of all the other reptiles , and mammals and birds.
right, dinosaurs gone, big reptiles gone.
But if you plot the data for a larger range of mammals, as well as for other animals like birds, reptiles , and fish,
All the reptiles living in the oceans died.
Turn from that to natural creatures, insects, animals of various sorts, reptiles , amphibians.
But we find it much harder to recognize that, actually, we also share our DNA with reptiles .
So 30,000 fish, but also 30,000 mammals, amphibians, birds, reptiles , all put together.
All the way up to an elephant or a rhino and everything you can think of in between for birds, mammals and reptiles .
And they're really important with the ecosystem because they eat a lot of different bugs, small rodents, and small reptiles .
He's worked in the fields of research biology, where he focused on aquaculture, agricultural biology and herpetology, which is the study of reptiles
When you think about the desert, I think people-- we talked a lot about, say, reptiles , or we talked about other types of animals.
She had a fight or flight system that was capable of emergency response, and this was inherited first from reptiles and refined more by mammals.
And they're divided, these chordates, into five classes-- the mammals, the birds, the fish, the reptiles , and the amphibians.
arranged in the five classes-- mammals, birds, fishes, reptiles , and amphibians.
And would have been the common ancestor of us, that is to say all the mammals, and all the reptiles , including birds, including dinosaurs, birds are dinosaurs actually.
They've got bigger brains per body weight than reptiles and fish do because the quote unquote "computational requirements" of raising
And two years after the "Origin of Species," a fossil called Archaeopteryx, which has got mixed characteristics of both birds and reptiles , was discovered.