If there ever had been a dino civilisation how would science look for or understand signs that it existed?

Interestingly small mammals coexisted with dinos for a very long time and long before they evolved into cave men so maybe there isn’t evolution of a big brain isn’t inevitable.

https://bigthink.com/the-past/dinosaur-civilization/

https://ask.metafilter.com/268088/Would-there-be-any-way-of-knowing-if-dinosaurs-had-a-civilization

The death of Sir James Lovelock marks an end of an era, was he the last polymath, will his methods and discoveries continue to be used.

Please find his obituary on the Royal Society’s site link provided below.

https://royalsociety.org/news/2022/07/james-lovelock-obituary/