Alfred Eisenack

German paleontologist (1891–1982).

Alfred Eisenack (born 13 May 1891 in Altfelde, West Prussia, died 19 April 1982 in Reutlingen) was a German paleontologist. He was a pioneer of micropaleontology and palynology. His botanical and mycological author abbreviation is "Eisenack". Eisenack took his photographs using a Leitz monocular microscope, to which he attached a box camera fashioned from a biscuit tin and furnished with glass negatives. He first described chitinozoans and many species of acritarchs, dinoflagellate cysts and graptolites. In 1973 he became an honorary member of the Paleontological Society.