Fig. 6From: Smithian ammonoid faunas from Utah: implications for Early Triassic biostratigraphy, correlation and basinal paleogeographyDistribution of ammonoid taxa in the Mineral Mountain section (MM in Fig. 1). Open dots indicate occurrence based only on fragmentary or poorly preserved material. Abbreviations as in Figs. 2 and 4. Xe Xenoceltitidae gen. indet. A beds, V.u. Vercherites undulatus sp. nov. bedBack to article page