Extended Data Fig. 2: Stratigraphic columns and detrital zircon dating information from the Pebbly Arkose Fm., Dande Communal Area, Zimbabwe.
From: Africa’s oldest dinosaurs reveal early suppression of dinosaur distribution
a, Stratigraphic columns of three transects (Extended Data Fig. 1) showing that taxa from the Dande assemblage are present in multiple stratigraphic layers in this region. b, Concordia plot of 238U–206Pb ratios against 235U–207Pb ratios of detrital zircons from the Pebbly Arkose Fm., Dande Communal Area, Zimbabwe. Error ellipses are error at 2σ. c, Detrital zircon age distribution, indicating the youngest grains in the sample are ~534 Ma. d, Best maximum age for the detrital zircon distribution is ~534 Ma, indicating the processes that created these zircons occurred long before the deposition of our Carnian locality. Error bars are standard error at 2σ; n = 275 independent measurements.
