Since then, paleontologists (scientists who study fossils) have learned much about this giant creature that lived more than 70 million years ago.
(scientists; study; fossils) (paleontologists; have learned; much about this giant creature; T:Since then) (this giant creature; lived; T:more than 70 million years ago)
scientists paleontologists this giant creature
study have learned lived
fossils
much about this giant creature T:Since then
T:more than 70 million years ago