Christopher R Fielding¹, Tracy Frank², Allen P Tevyaw³, Katarina Savatic⁴, Vivi Vajda⁵, Stephen McLoughlin⁶, Christopher Mays⁶, Robert S Nicoll⁷, Malcolm Bocking⁸ and James L Crowley⁹, (1)University of Nebraska Lincoln, Earth & Atmospheric Sciences, Lincoln, NE, United States, (2)University of Nebraska Lincoln, Lincoln, NE, United States, (3)University of Nebraska-Lincoln, Earth and Atmospheric Sciences, Lincoln, NE, United States, (4)University of Nebraska-Lincoln, Lincoln, NE, United States, (5)Swedish Museum of Natural History, Department of Palaeobiology, Stockholm, Sweden, (6)Swedish Museum of Natural History, Stockholm, Sweden, (7)Retired, Canberra, Australia, (8)Bocking Associates, Sydney, Australia, (9)Boise State University, Boise, ID, United States