Nacimiento Formation

Geology

Members: unnamed (87), Deltatherium Zone (1), Ojo Encino (2), Pantolambda Zone (1), upper (1)

Lithologies: not reported (42), "siliciclastic" (1), claystone (3), mudstone (4), siltstone (2), sandstone (3)

Paleoenvironments: terrestrial indet. (83), fluvial indet. (6), "floodplain" (3)

Age range: base of the Puercan to the top of the Torrejonian or 66.00000 to 60.90000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Puercan66.0 - 63.4USA (New Mexico) (14657 14661 14662 14703 14760 14783 14794 14795 74532 74549 74555 74556 84548 84549 125183 128449 174231 174235 174236 193949 193950 193951 193952 193953 197332)
Puercan - Torrejonian66.0 - 60.9USA (New Mexico) (31196 31197 31201 52936 52940 53225 76064 128452 128453 131857 193958 193959 193960 193961 193962 193963 193964 193965 193966)
Torrejonian63.4 - 60.9USA (New Mexico) (14810 14811 14812 14815 14816 14818 14824 14825 14826 14827 14831 14832 14833 14834 14835 14836 14856 14859 14860 14861 14862 14863 14864 14865 14866 14867 14868 14869 14870 14871 14873 14877 14878 14888 14890 14891 14892 14893 34495 76063 128450 179481 187009 193954 193955 193956 193957 197327 197328 232086)