What Makes a Dinosaur a Dinosaur

[Troodon]

An very basic article by the Smithsonian answering the question what makes a dinosaur a dinosaur

 

https://www.smithsonianmag.com/science-nature/ask-smithsonian-what-is-dinosaur-180967448/

 

 

 

[JohnBrewer]

And I thought it was all down to a ROAAAAR. 

 

Great link.