What's the Name of That Book??? discussion

This book (Maybe first of a series?) presents a forward/backward chronology where the KT boundary and excess iridium is actually evidence of a civilization destroying war between intelligent dinosaurs.

Parallel events taking place in the contemporary human political/military chronology.

Published early '90s?

Steven, what do you mean by the KT boundary?

The K-T boundary separates the age of reptiles and the age of mammals, which was first recognized over one hundred years ago by geologists who realized that there was a dramatic change in the types of fossils deposited on either side of this boundary.

https://www.lpi.usra.edu/science/krin...

Guess: Toolmaker Koan?

That is it! Yes, thank you so much!!!