James St. John:
Camptosaurus sp. (ornithopod dinosaur hip bone with puncture hole) (Morrison Formation, Upper Jurassic; Cleveland-Lloyd Dinosaur Quarry, Emery County, Utah, USA) 1
James St. John:
Camptosaurus sp. (ornithopod dinosaur hip bone with puncture hole) (Morrison Formation, Upper Jurassic; Cleveland-Lloyd Dinosaur Quarry, Emery County, Utah, USA) 2
James St. John:
Fossil horse skull with tooth puncture hole (Ash Hollow Formation, Miocene; Ashfall Fossil Beds, Nebraska, USA) 1
James St. John:
Fossil horse skull with tooth puncture hole (Ash Hollow Formation, Miocene; Ashfall Fossil Beds, Nebraska, USA) 2
James St. John:
Placenticeras placenta (fossil ammonite) (Upper Cretaceous; western North America) 1
James St. John:
Placenticeras placenta (fossil ammonite) (Upper Cretaceous; western North America) 2
James St. John:
Placenticeras placenta (fossil ammonite) (Upper Cretaceous; western North America) 3
James St. John:
Placenticeras placenta (fossil ammonite) (Upper Cretaceous; western North America) 4
James St. John:
Placenticeras placenta (fossil ammonite) (Upper Cretaceous; western North America) 5