Authors: DAYVAULT Richard D HATCH H Steven

Citation: D. Dayvault Richard et Hatch H Steven, Short shoots from the late jurassic Morrison formation of southeastern Utah, Rocks and minerals , 78(4), 2003, pp. 232-247

Authors: DAYVAULT Richard D HATCH H Steven

Citation: D. Dayvault Richard et Hatch H Steven, Conifer cones from the jurassic and cretaceous rocks of eastern Utah, Rocks and minerals , 82(5), 2007, pp. 382-396

Authors: DAYVAULT Richard D HATCH H Steven

Citation: D. Dayvault Richard et Hatch H Steven, Cycads from the upper jurassic and lower cretaceous rocks of southeastern Utah, Rocks and minerals , 80(6), 2005, pp. 412-432