Robert Brown
A much better phrasing would be, "In 1988 biologist Paul Serenos' discovery broke the record for most ancient dinosaur remains".
Aristotle is actually known to be the very first biologist. He was credited with being the first biologist in the western tradition.
The study of cells is known as cytology, so a cell biologist is a cytologist.
Marine biologist
Carl Chun was one famous marine biologist from the early 20th century. The most famous, however, would be Jacques Cousteau, who lived from 1910 to 1997 and was known as both a marine biologist and an explorer.
Microscope is the most common instrument used by biologist.
A field biologist.
Marine biologist
beats me
The Library of Alexandria, and the Library of Pergamum are some of the most well known ancient libraries around.
There are a lot Filipino biologists that are well known, but it is Angel C. Alcala who is most famous among them. He is best known on his research on Philippines amphibians and reptiles where he discovered 50 new species.
Albert Einstein was not a biologist; he was a theoretical physicist.