hi 200 million years Although he celebrates his birthday in the Barney franchise, he remains over 200 million years old. 200 million years Although he celebrates his birthday in the Barney franchise, he remains over 200 million years old.200 million years Although he celebrates his birthday in the Barney franchise, he remains over 200 million years old.200 million years Although he celebrates his birthday in the Barney franchise, he remains over 200 million years old.