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12 de jun. de 2024 · George Gaylord Simpson (born June 16, 1902, Chicago, Ill., U.S.—died Oct. 6, 1984, Tucson, Ariz.) was an American paleontologist known for his contributions to evolutionary theory and to the understanding of intercontinental migrations of animal species in past geological times.
19 de jun. de 2024 · Investigadores hallaron una necrópolis que contenía sarcófagos decorados, uno de ellos con una figura que a muchos les ha recordado el personaje de Los Simpson. Pero la verdadera relevancia de este hallazgo va mucho más allá.
26 de jun. de 2024 · Others who made significant contributions to understanding the event in the century that followed include Florentino Ameghino, W. D. Matthew, W. B. Scott, Bryan Patterson, George Gaylord Simpson and S. David Webb.
Hace 1 día · El neodarwinismo y la teoría sintética de la evolución. Las ideas de Weismann dividieron a la comunidad científica en facciones hostiles. La teoría del plasma germinal o germoplasma polarizó ...
12 de jun. de 2024 · And R.S. Lull— professor of a young George Gaylord Simpson— ascribed the entire body of orthogenetic theory to “the difficulty of explaining the beginnings of… new organs by the selection of individual variations” (Lull 1920, 175).
Hace 3 días · George Gaylord Simpson classified his genus Boreostracon as a close relative of Glyptodon, but still believed that there were multiple North American glyptodont genera. Xenoglyptodon was placed as a glyptodont close to the other North American genera by Meade (1953), but he did not state its relation to South American genera.
1 de jul. de 2024 · An evolutionary species, suggested by George Gaylord Simpson in 1951, is "an entity composed of organisms which maintains its identity from other such entities through time and over space, and which has its own independent evolutionary fate and historical tendencies".
