I was watching a documentary in German where scientists found a lot of fossils in a small area. Almost all fossils have been from the same species. (Except a few others.) Would it be correct to say:
"They found almost only one species" ?
Alternative research brought up also: "found mainly" and "found basically"
Here is a counterpart at scienceview.com: "Almost no" fossil record exists for soft organisms such as jellyfish and worms.
Further research brings up that "almost only" is very often used in combination with fossils.