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Confirmation of Romer's Gap as a low oxygen interval constraining the timing of initial arthropod and vertebrate terrestrialization | PNAS
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Phylogeny of basal hexapod clades. Hexapoda gap in dark grey, Romer's... | Download Scientific Diagram
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A fish and tetrapod fauna from Romer's Gap preserved in Scottish Tournaisian floodplain deposits - Otoo - 2019 - Palaeontology - Wiley Online Library
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