Reply to comment: Oman chronostratigraphy

Le Guerroue and others (this issue) highlight several questions regarding the Neoproterozoic stratigraphy of Oman in response to the publication of Bowring and others (2007). We take this opportunity to respond to each of their points, to reiterate some of the conclusions made in our original paper, stress the importance of understanding all sources of uncertainty in geochronological data, and re-emphasize the distinction between geochronological constraints and predictive models.