Digging into the ancestral stocks of Jurassic lineages: ostracods (Crustacea) from Carnian (Late Triassic) sponge mounds from the Maantang Formation (South China)

Open Access

Fig. 1

A. Geographical and topographical map of the northwestern margin of the Sichuan Basin, South China (Google Maps, 2018), showing the locations of the three studied mounds (C31, C33 and C36). B. Simplified geological map showing the position of the studied mounds (redrawn for Wu, 1989 and Jin et al., 2018).

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