are birds dinosaurs yes or no

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Over millions of generations, these gliding reptiles could have evolved into birds. Of course everybody knows what a bird is. In the Linnaean classification, a reptile is an animal that is cold blooded and has scales – so in this sense, a bird is not a reptile.

It’s a bid hard to follow, but in essence, things aren’t very complicated – both these systems have different uses.The question which emerges now is: if birds are indeed reptiles, what are their closest relatives? Their mouths still contained sharp teeth.

This creature, Both new dinosaurs, though, are less birdlike even than the earliest-known bird, The new finds raise a deeper problem, the same raised by the discovery of any transitional form between what we have hitherto thought of as distinct categories, such as 'bird' and 'dinosaur'. Bird anatomy seems so peculiar, and so specialized, that people have have reasoned that it must have evolved to meet the challenge of flight.

Even though the link between birds and dinosaurs is firmly established, the definition of birds has become a difficult problem.

They were the dominant life forms on land for 135 million years, until the great extinction wiped most of them out.

Looking at this fossil, can you ever prove that it represents the last remains of the lineal ancestor of you, or of any other human or animal?

Anything with feathers was a bird, by definition.

Both would have looked, in life, like very stringy turkeys, with long necks and legs, and relatively stubby arms. Yes, this also means that birds technically fall into the Reptile clade. NEXT> 2. It has no pedigree - until you give it one. Decades of major new discoveries and studies have convinced researchers that there is a direct link between modern bird species and theropod dinosaurs. These ancient birds looked quite a lot like small, feathered dinosaurs and they had much in common. You sometimes hear people saying that birds are related to dinosaurs, but that’s really not true – birds aren’t Dinosaurs were a diverse group of animals which first emerged during the Triassic, 231.4 million years ago. Feeling that there is a gap between scientists and the general audience, he started ZME Science -- and the results are what you see today. Birds are animals with beaks and feathers. We are so convinced that we know what birds are that we hardly give them a second thought.But this cosy familiarity hides a dangerous fallacy.

They eat birdseed and make ugly white streaks down the sides of buildings.

But let's start from the beginning.Accurate scientific information is more important than ever.

Well, I shall ask the same question in a different way: how can we be certain that the adaptations for flight we see in present-day birds really started out that way?

Beneath this assumption is another, more serious mistake - that we can take a series of fossils arranged according to their stratigraphic order, and use this order to make statements about ancestry and descent. Many reptiles today are capable of 'gliding', either using special extensions of skin, or even skin stretched over massively extended ribs. Modern birds appeared to emerge in a snap of evolutionary time. That is, the range of forms of creatures that have existed over the 4,500 million years of Earth's history is inestimably greater than the feeble remnant that time has left us. Joining

Likewise, birds are considered reptiles in the modern cladistic sense of the term, and their closest living relatives are the crocodilians.

Same evolutionary lineage as T Rex.

Can you imagine coming face-to-face with a toothy pigeon?Over the next 66 million years, birds evolved in many ways, which enabled them to survive in lots of different habitats. Can you imagine coming face-to-face with a toothy pigeon?

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