James St. John:
Willwood Formation (Lower Eocene; Gooseberry Badlands, Bighorn Basin, Wyoming, USA) 1
James St. John:
Willwood Formation (Lower Eocene; Gooseberry Badlands, Bighorn Basin, Wyoming, USA) 2
James St. John:
Willwood Formation (Lower Eocene; Gooseberry Badlands, Bighorn Basin, Wyoming, USA) 3
James St. John:
Willwood Formation (Lower Eocene; Gooseberry Badlands, Bighorn Basin, Wyoming, USA) 4
James St. John:
Willwood Formation (Lower Eocene; Gooseberry Badlands, Bighorn Basin, Wyoming, USA) 5
James St. John:
Willwood Formation (Lower Eocene; Gooseberry Badlands, Bighorn Basin, Wyoming, USA) 6
James St. John:
Willwood Formation (Lower Eocene; Gooseberry Badlands, Bighorn Basin, Wyoming, USA) 7
James St. John:
Willwood Formation (Lower Eocene; Gooseberry Badlands, Bighorn Basin, Wyoming, USA) 8