paradoxographer
/ˌparədɒkˈsɒɡrəfə/noun
A writer in a literary genre, originating in early Alexandrian Greece, in which (natural or man-made) phenomena considered remarkable or fantastic are described.
Origin
Early 20th century; earliest use found in Classical Philology. From medieval Greek παραδοξογράϕος writer on marvels + -er; compare -grapher.