There were thousands of species, with between 500 and 1000 non-avian species catalogued from their fossils. There were many hundreds of co-existing prehistoric birds and marine dinosaurs.
There are lists at the related links.
Around 500 genera having been found described, but estimates of the total number of dinosaur genera to have existed falls around 2,500. this leaves potentially thousand of species to be found in the future, though it is likely that some species may never be found.
500 genera and 1,000 species of extinct dinosaurs are known to science, but we have only discovered a fraction of the dinosaurs that once existed. Birds, a subgroup of dinosaurs, have over 10,000 described species alive today.
So far there are only roughly 600-700 species classified and named. Scientists predict that there are more than twice as many species in total, they have just not yet been discovered.
Approximately 700 Species have been named.
over 300
There are about 2000 different species of dinosaurs http://www.dinosaurfact.net
What dinosaurs? They came in VERY different sizes.
1500
In cretaceous period there were many different dinosaurs there were 67 different type's.
We do not know the total number of dinosaurs that existed, as many have not been discovered. Currently, there are 500 known genera and 1,000 different species.
To date, about 600, but it is estimated that there were about 1400+ dinosaurs.
No, Humans and Dinosaurs are in different time periods.
Dinosaurs came in different sizes, just as animals today are different sizes. There can be many animals larger than SOME dinosaurs.
There are many different dinosaur orders all belonging to the superorder Dinosauria.
Many types of non-avian dinosaurs lived in Wales, and it's fauna would not have been much different from that of the rest of western Europe.
Not a whole lot. Birds and dinosaurs share the same skeletal structure and walk the same and many had feathers and were probably warm blooded.
The most logical theory for the extinction of the dinosaurs is that a large asteroid impacted the earth. Look into it, this topic has many different theories and lots of different interesting information. The answer to this question can be opinionated and debated.