How many kinds of dinosaur were there’?

Answer 1

I don't know but millions out there. We still don't know because many are undiscovered!

Answer 2

How long is a piece of string.
The problem is that the fossil record is wholly in complete due to animals including dinosaurs needing to have died somewhere where they could rapidly be covered in sediment decompose with no air and then silicates and minerals to replace bone structures. Having said that, this also means that the fossil record is hopelessly skewed towards marine life.
so the only answer is nobody knows! we don't even know how many species are around today let alone millions of years ago.

However the only dinosaurs that i know still exist are crocodiles and alligators whose body structures have remained virtually unchanged for 60 million years.

Answer 3

We can have a good estimate at how many kinds of dinosaur there were - an upper limit anyway.
People that know more than me have estimated 668 supposed dinosaur genera.

However there may have been far fewer. It is very difficult to tell how closely related 2 animals are just from their skeleton/fossil.
For example, if you found a fossil Chiwuawua and fossil Great Dane and fossil Bulldog, would you think they were all the same species? Probably not.

Answer 4

Probably many tens or even hundreds of millions over the eons.

Get yourself a book on palaeontology and explore the question properly.

Answer 5

Thousands but theres nothing to say they have all been discovered

Answer 6

actually they are countless as they existed a long time ago so we don't know all their species and due to their evolution before extinction they were countless

Answer 7

3 big ones, medium ones and little ones.

Answer 8

Well! when I was a little kid there was about........

Answer 9

i don't think that they are countable...