The prepositional phrase is "about dinosaur extinction" and the object is "extinction." The word "dinosaur" is called a "noun adjunct" rather than an adjective.
Yes. At the time of ther Permian extinction 251 million years ago dinosaurs had not yet evolved. The dinosaur extinction was 65 million years ago.
A paleontologist
Extinction has happened to the dinosaur family.
Big dinosaur, big egg. Small dinosaur, small egg.
Dinosaur?
A cockroach
yes
Dinosaur Train - 2009 The Earthquake 2-13 is rated/received certificates of: Australia:G
No, the breakup of Pangaea occurred long before the mass extinction of dinosaurs. The main factor believed to have caused dinosaur extinction is an asteroid impact that occurred around 66 million years ago.
Dinosaur Train - 2009 Dinosaur Big City Part 1 Dinosaur Big City Part 2 was released on: USA: 6 September 2011
as loud as a dinosaur