1 "Ficheiro:Cretaceous-Tertiary_boundary_clay_(Raton_Formation,_65_Ma;_southern_Colorado,_USA)_(34782334145).jpg".

Ficheiro:Cretaceous-Tertiary boundary clay (Raton Formation, 65 Ma; southern Colorado, USA) (34782334145).jpg

flickr.com/photos/jsjgeology/34782334145/ operator: Flickr URL: https://live.staticflickr.com/4252/34782334145_88a59cb1f3_o.jpg determination method: SHA-1...

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