Utahraptor lived during the Early Cretaceous period, roughly 126 million years ago. It became extinct along with many other dinosaur species at the end of the Cretaceous period, about 66 million years ago. Therefore, Utahraptor has been extinct for approximately 66 million years.
No. Utahraptor existed long before T. rex appeared.
None, they have been extinct for a long time. None, they have been extinct for a long time.
they aren't extinct
the white tigers have been extinct since 2006
They have never been extinct. They may be endangerd due to poaching.
The Tasmanian forester kangaroo is not extinct.
Since 1921.
Tyrannosaurus Rex was an average of 20 ft. tall and 40 ft. long, Utahraptor was an average of 10 ft. tall and 20 ft. long-Making T-Rex approximately 2x the size of Utahraptor in both mentioned dimensions. Of course outliers exist( A situation in which Much larger-and much smaller specimen occur as compared to the mean value in any given dimension of a species.), However these are the "average" values.
a utahraptor
251(ish) years
Crocodiles are not extinct.
About 65 million years