What is so special about the Tuataras that its called a Living Fossil? Why is it the only surviving member of its clade? Are they related or older to all Dinosaurs?

Question

Bonus – are they friendly to humans?

In: Biology

Answer 1

Tuatara are the only remaining members of the Rhynchocephalia and the last of the order Sphenodontia. They are the third survivor of their line, with snakes and lizards. Their ancestors lived concurrently with but separately from dinosaurs. Their last immediate relative died out about 60M years ago.

As far as what they think of humans? In my experience they don’t give a shit about humans.