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. 2021 Feb 24;8(2):210050. doi: 10.1098/rsos.210050

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© 2021 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 3. — Taxonomic diversity and dental morphospace of early Palaeocene plesiadapiforms versus archaic ungulates. (a) Species richness and (b) relative abundances of plesiadapiforms (stars) and archaic ungulates (plus signs) in mammalian local faunas from northeastern Montana, USA. Data are from [12,28,30] and are provided in the electronic supplementary material. (c) PC1 versus PC2 plot of two-dimensional geometric morphometric analysis of lower molars illustrating dental morphospace occupancy of Lancian and early Puercan (Pu1) therians from northeastern Montana with additional plesiadapiforms from later in the Puercan (Pu3) and the early Torrejonian (To1) NALMA subintervals. Purgatorius ceratops (cer) = ?Pu1; P. janisae (jan) and P. mckeeveri (mck) = Pu1 and Pu3; and P. unio (uni) and Ursolestes perpetior (Urs) = Pu3. Data are from [31] and this study. The specimen list is provided in the electronic supplementary material.