Member of the dinosaur clade which included diplodocus (8)
I believe the answer is:
sauropod
(Another definition for sauropod that I've seen is " old beast".)
I've seen this clue in The Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.