Alan Cheetham
Alan Herbert Cheetham (born January 30, 1928 in El Paso , Texas ) is an American paleontologist .
Cheetham grew up in Taos , New Mexico . He graduated from the New Mexico Institute of Mining and Technology with a bachelor's degree in 1950 and from Louisiana State University with a master's degree in geology in 1952 (with Norman D. Newell ) and received his doctorate in paleontology from Columbia University in 1959 . From 1954 he was an instructor and later an associate professor at Louisiana State University. In 1961/62 he was a Fellow of the National Science Foundation at the British Museum of Natural History in London and 1964/65 visiting professor at Stockholm University . From 1966 he was Associate Curator and from 1969 Curator for Paleobiology at the Smithsonian Institution . From 1987 he was a senior geologist there . In 2001 he retired and moved to Santa Fe .
He is particularly concerned with Cenozoic bryozoans and tested (and confirmed) there the theory of punctuated equilibrium (Punctuated Equilibrium) from the fossil records, mostly from the Neogene of Panama , Costa Rica , Venezuela and the Dominican Republic . To see how the genotype and phenotype (calcareous skeleton) relate to one another, he also carried out breeding experiments with recent bryozoa.
From 1982 to 1984 and from 1986 to 1988 he was Associate Editor of Paleobiology .
In 2001 he received the Paleontological Society Medal and in 1997 the Raymond C. Moore Medal for Paleontology . He is a Fellow of the American Association for the Advancement of Science .
Fonts
- with HJ Sanner Metrarabdotos and Related Genera (Bryozoa: Cheilostomata) in the Late Paleogene and Neogene of Tropical America , Paleontological Society Memoir 67, Supplement to Journal of Paleontology 81, 2007
- Evolutionary stasis versus change , in DEG Briggs, PR Crowther (editor) Palaeobiology II , Blackwell Science, Oxford, 2001, pp. 137-142
- with J. Jackson Tempo and mode of speciation in the sea , Trends in Ecology and Evolution, Volume 14, 1999, pp. 72-77
- with J. Jackson On the importance of nothing doing: an exhaustive study of tiny bryozoans supports the idea of punctuated equilibrium , Natural History, 6/1994, pp. 56-59
- with J. Jackson, LC Hayek Quantitative genetics of bryozoan phenotypic evolution , part 1-3, Evolution, Volume 47, 1993, 1526-1538, Volume 48, 1994, pp. 360-375, Volume 49, 1995, pp. 290- 296
Web links
Individual evidence
- ↑ Life data according to American Men and Women of Science , Thomson Gale 2004
| personal data | |
|---|---|
| SURNAME | Cheetham, Alan |
| ALTERNATIVE NAMES | Cheetham, Alan Herbert (full name) |
| BRIEF DESCRIPTION | American paleontologist |
| DATE OF BIRTH | January 30, 1928 |
| PLACE OF BIRTH | El Paso , Texas |