| Summary: | FIG. 7. Hypothesis 5, North America-Asia vicariance event caused by the breakdown of the Bering land bridge during the early Late Cretaceous. The marine barrier between northeast Asia and northwest North America was re-established in the Cenomanian Stage. The red X denotes the approximate position of the hypothesized biogeographical barrier (Bering Strait); Dotted lines denote paleogeography at 110 Ma, while solid lines denote it at 90 Ma. Paleomap after (Matthews et al., 2016). Abbreviations: A, Asia; AO, Atlantic Ocean; E, Europe; F, Africa; I, India; M, Madagascar; N, North America; PO, Pacific Ocean; S, South America; T, Antarctica; TO, Tethys Ocean; U, Australia. Published as part of Pittman, Michael & Xu, Xing, 2020, Pennaraptoran Theropod Dinosaurs Past Progress And New Frontiers, pp. 1-354 in Bulletin of the American Museum of Natural History 2020 (440) on page 139, DOI:10.1206/0003-0090.440.1.1, http://zenodo.org/record/12778891
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