Fig. 47From: Smithian ammonoid faunas from Utah: implications for Early Triassic biostratigraphy, correlation and basinal paleogeographyBox plots of H/D, W/D and U/D for Arctoceras tuberculatum from Utah and Nevada (this work and Kummel and Steele 1962, respectively), A. septentrionale from South Primorye (Zakharov 1968) and Churkites noblei from Utah and Nevada (this work and Jenks 2007, respectively)Back to article page