In their comment, Clyde et al. point out an important discrepancy between our 40Ar/39Ar-based age model (Smith et al., 2003), paleomagnetic stratigraphy (Clyde et al., 1997; 2001), and an 40Ar/39Ar age from Murphey et al. (1999). Specifically, Clyde et al. conclude that the F+ chron within the Bridger Formation at the top of their South Pass section (Clyde et al., 2001) correlates to C22n instead of C21n, implying that the entire Green River Formation is contained between C23r and C22r. Their interpretation is based largely on...

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