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Typical Pennsylvanian crinoidal limestone

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Typical Pennsylvanian crinoidal limestone.jpg Cenozoic mammals - Woolly RhinocerosThumbnailsFlying dinosaurs - RhamphorhynchusCenozoic mammals - Woolly RhinocerosThumbnailsFlying dinosaurs - RhamphorhynchusCenozoic mammals - Woolly RhinocerosThumbnailsFlying dinosaurs - RhamphorhynchusCenozoic mammals - Woolly RhinocerosThumbnailsFlying dinosaurs - RhamphorhynchusCenozoic mammals - Woolly RhinocerosThumbnailsFlying dinosaurs - Rhamphorhynchus