TY - JOUR AU - Gould, Stephen Jay AB - EVOLUTIONARY PATTERNS IN PELYCOSAURIAN REPTILES : A FACTOR-ANALYTIC STUDY STEPHEN JAY GOULD Department of Geology, Columbia University, New York Received December 28, 1965 tor analysis are in order. Thurstone FACTOR ANALYSIS IN (1947), Cattell (1952), and Harman EVOLUTIONARY STUDIES The construction of a phylogeny from (1960) are general texts on factor analysis. The specific form followed here was de- fossil data involves an inference based veloped by Imbrie (1963) and Manson and upon patterns of morphologic change. A Imbrie (1964), the latter containing a de- description of these patterns as they affect scription of the program used here- the total organism provides the most de- COVAP (Columbia Vector Analysis Pro- sirable basis for approaching the funda- gram). COVAP was applied to geologic mental problem of evolutionary paleontol- data by Imbrie and Van Andel (1964). ogy-the explanation of form in terms of The voluminous data of large tabular adaptation. compilations cannot be handled conve- Until recently, quantitative morphol- niently in raw form. Methods which ab- ogists could proceed little beyond the pre- stract simpler patterns from raw data are sentation of morphologic data in pairs, using to be judged as models. The schemes them- the statistical techniques of bivariate anal- TI - EVOLUTIONARY PATTERNS IN PELYCOSAURIAN REPTILES: A FACTOR‐ANALYTIC STUDY JO - Evolution DO - 10.1111/j.1558-5646.1967.tb00166.x DA - 1967-06-01 UR - https://www.deepdyve.com/lp/oxford-university-press/evolutionary-patterns-in-pelycosaurian-reptiles-a-factor-analytic-sbyJAV0UYj SP - 385 EP - 401 VL - 21 IS - 2 DP - DeepDyve ER -