Dictionary of Human Evolution and Biology

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Accretion Model

Scheme in which fossil hominids formerly termed archaic or transitional form are further segregated into Stage 1, the early pre-Neandertals (e.g. Mauer and Petralona); Stage 2, the pre-Neandertals (e.g. Steinheim, Swanscombe, and Atapuerca); Saale - Eem Stage 3, the early Neandertals (e.g. Biache); and Weichsel Stage 4, the classic Neandertals (e.g. La Chapelle and La Ferrassie). This model is assumed by some to represent a temporal series of a single isolated gene pool.

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