James St. John: Fusulinid limestone (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 1
James St. John: Fusulinid limestone (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 2
James St. John: Fusulinid limestone (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 3
James St. John: Fusulinid limestone (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 4
James St. John: Fusulinid limestone (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 5
James St. John: Fusulinid limestone (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 6
James St. John: Limestone with oncolites (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 1
James St. John: Limestone with oncolites (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 2
James St. John: Limestone with oncolites (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 3
James St. John: Limestone with oncolites (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 4
James St. John: Limestone with oncolites (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 5
James St. John: Fossiliferous limestone with phylloidal algae (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 1
James St. John: Fossiliferous limestone with phylloidal algae (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 2
James St. John: Fossiliferous limestone with phylloidal algae (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 3
James St. John: Lagoonal limestones (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 1
James St. John: Lagoonal limestones (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 2
James St. John: Lagoonal limestones (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 3
James St. John: Reefal limestones (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 1
James St. John: Reefal limestones (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 2
James St. John: Reefal limestones (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 3
James St. John: Reefal limestones (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 4
James St. John: Reefal limestones (Holder Formation, Upper Pennsylvanian; Dry Canyon, Otero County, New Mexico, USA) 5