Mammoth evolution in the late Middle Pleistocene: The Mammuthus trogontherii-primigenius transition in Europe
Mammoth evolution in the late Middle Pleistocene: The Mammuthus trogontherii-primigenius transition in Europe
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中更新世晚期猛犸象的演化:欧洲猛犸象-原始猛犸象的转变
DOI:
10.1016/j.quascirev.2022.107693
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发表时间:
2022
影响因子:
4
通讯作者:
Lister A
中科院分区:
文献类型:
--
作者:
Lister A
The late Middle Pleistocene (Marine Isotope Stages 11-6, ca. 425-125 ka) saw the transition from the so-called steppe mammoth (Mammuthus trogontherii) to the woolly mammoth (M. primigenius) in Europe. A metrical study of molariform teeth from more than 40 localities in Britain and continental Europe allows this transition to be traced in detail. The morphological trend began as early as MIS 10, with the final transition toM. primigeniusaround the MIS 7/6 boundary where several samples (Marsworth, Crayford, La Cotte) span both species' morphology. The ‘small mammoth’ of MIS 7 is not homogeneous, as those from Stanton Harcourt (Oxfordshire, UK) are smaller and more advanced than those from Ilford (Essex, UK), likely corresponding to their younger age within MIS 7. Contrary to expectation, the thinning of molar enamel and increase in lamellar packing from MIS 16 to MIS 7 appear not to have been driven by increase in lamellar number since they precede it, nor is lamellar number primarily correlated to molar size. The adaptive significance of size changes is unclear, but they affected molar function via their effects on lamellar spacing. This study underlines the importance of adequate sample sizes and bivariate analysis of metric variables to take account of size change. The implications of the study for taxonomy, biostratigraphy and the effects of insularity are discussed.
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影响因子:
4
作者:
A. Lister
通讯作者:
A. Lister
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