Crossword clue: of, pertaining to, or designating, the period of time following the jurassic and preceding the eocene.
2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
cretaceous
10 letters
web-def
from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
Of, pertaining to, or designating, the period of time following the Jurassic and preceding the Eocene.