Fossil Record 6 Volume 1

America ammonite ammonoid anterior associated Basin Berry bone brachiopods Bulletin Campanian Cave collected Colorado complete coprolites corals Cretaceous deposits described Description Devonian differs dinosaur distal dorsal early elements et al evidence fauna FIGURE footprints Formation fossil genus Geological Gorgosaurus growth IDPMG indicate Islands Journal known Late lateral length limb limestone locality located lower Lucas margin material measurements Medicine Formation Member Mexico middle Mountains Museum of Natural Natural History Neurankylus NMMNH North America occurrence Paleontology plates Pleistocene position posterior present preserved range record referred region relatively remains reported represented ridge Scale Science Shale shell side similar skull slightly slope sloth Society solitary species specimen squamosal stratigraphic suggested surface teeth thickness tooth Tournaisian traces turtles tyrannosaurid unit University Upper USNM valve ventral Vertebrate Western width Yakutsk zone