Fig. 19From: Smithian ammonoid faunas from Utah: implications for Early Triassic biostratigraphy, correlation and basinal paleogeography a–c Xenoceltites sp. indet. A., UBGD 275010, loc. DH1-13, Confusion Range, Anasibirites kingianus beds, Smithian; c scale bar is 5 mm (H = 10.6 mm); d Xenoceltitidae gen. indet. A., UBGD 275011, loc. MIA11, Mineral Mountains, Xenoceltitidae gen. indet. A beds, SmithianBack to article page