Every paleontologist knows that most new species, genera, and families, and that nearly all categories above the level of family appear in the record suddenly and are not led up to by known, gradual, completely continuous transitional sequences. George Gaylord Simpson categorycompletelycontinuous share on social
Darwin recognized the fact that paleontology then seemed to provide evidence against rather for evolution in general or the gradual origin of taxonomic categories in particular. George Gaylord Simpson categorydarwinevidence Change image and share on social
He is a state of matter, a form of life, a sort of animal, and a species of the Order Primates, akin nearly or remotely to all of life and indeed to all that is material. George Gaylord Simpson akinanimalform Change image and share on social
I have a debt, a loyalty to the museum; the best place for me to do what I wanted to do. George Gaylord Simpson debtloyaltymuseum Change image and share on social
