Elso Sterrenberg Barghoorn (June 30, 1915 – January 22, 1984) was an American

paleobotanist Paleobotany, which is also spelled as palaeobotany, is the branch of botany dealing with the recovery and identification of plant remains from geological contexts, and their use for the biological reconstruction of past environments (paleogeogr ...

, called by his student

Andrew Knoll Andrew Herbert Knoll (born 1951) is the Fisher Research Professor of Natural History and a Research Professor of Earth and Planetary Sciences at Harvard University. Born in West Reading, Pennsylvania, in 1951, Andrew Knoll graduated from Lehigh U ...

, the present Fisher Professor of Natural History at Harvard, "the father of

Pre-Cambrian The Precambrian (or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of the ...

palaeontology Paleontology (), also spelled palaeontology or palæontology, is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene epoch (roughly 11,700 years before present). It includes the study of fossi ...

." Barghoorn is best known for discovering in

South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...

n rocks

fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...

evidence of life that is at least 3.4 billion years old. These fossils show that life was present on Earth comparatively soon after the

Late Heavy Bombardment The Late Heavy Bombardment (LHB), or lunar cataclysm, is a hypothesized event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, at a time corresponding to the Neohadean and Eoarchean eras on Earth. According to the hypoth ...

(about 3.8 billion years ago). Barghoorn was born in

New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...

. After graduating from

Miami University Miami University (informally Miami of Ohio or simply Miami) is a public research university in Oxford, Ohio. The university was founded in 1809, making it the second-oldest university in Ohio (behind Ohio University, founded in 1804) and the 10 ...

with a BSc and an MSc in biology, Barghoorn obtained his Ph.D. in paleobotany from the

Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher le ...

, faculty of biological sciences, in 1941. After teaching for five years at

Amherst College Amherst College ( ) is a private liberal arts college in Amherst, Massachusetts. Founded in 1821 as an attempt to relocate Williams College by its then-president Zephaniah Swift Moore, Amherst is the third oldest institution of higher educatio ...

, he joined the Harvard faculty, becoming Fisher Professor of Natural History and curator of the university's plant fossils collections. He was elected a Fellow of the

American Academy of Arts and Sciences The American Academy of Arts and Sciences (abbreviation: AAA&S) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin, Andrew Oliver, and ...

in 1950. In 1972 Barghoorn was awarded the

Charles Doolittle Walcott Medal Charles Doolittle Walcott Medal is an award presented by the National Academy of Sciences every five years to promote research and study in the fields of Precambrian and Cambrian life and history. The medal was established and endowed in 1934 by ...

from the

National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the Nati ...

, of which he was also a member. He was also a member of the

(1967) and the American Philosophical Society (1978). As a posthumous honor, the

Paleontological Society The Paleontological Society, formerly the Paleontological Society of America, is an international organisation devoted to the promotion of paleontology. The Society was founded in 1908 in Baltimore, Maryland, and was incorporated in April 1968 in ...

established the Elso Barghoorn Student Research Award. Barghoorn married Margaret Alden MacCleod in 1941, Teresa Joan LaCroix in 1953, and Dorothy Dellmer Osgood (1936–1982) in 1964. The first two marriages ended in divorce.

Selected publications

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References

External links

National Academy of Sciences Biographical Memoir
1915 births 1984 deaths Scientists from New York City Miami University alumni Harvard University alumni Amherst College faculty Harvard University faculty Paleobotanists Fellows of the American Academy of Arts and Sciences Charles Doolittle Walcott Medal winners 20th-century American botanists Members of the American Philosophical Society {{US-botanist-stub