El Molino Formation
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For other uses, see Molino Formation.
The El Molino Formation is a Maastrichtian geologic formation pertaining to the Puca Group of central Bolivia. The formation comprises fine-grained sandstones and sandy limestones with stromatolites deposited in a shallow marine to lacustrine environment. The formation has provided fossils of Dolichochampsa minima,[1] and ichnofossils of Ankylosauria indet., Ornithopoda indet., Theropoda indet. and Titanosauridae indet.[2][3][4] The tracksite of Cal Orcko is the best known example of the ichnofossil locations of the formation. The ichnofossil of Ligabueichnum bolivianum may be attributed to an ankylosaur.[5] The fossil fish species Dasyatis molinoensis is named after the formation.
Quick Facts Type, Unit of ...
El Molino Formation | |
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Stratigraphic range: Maastrichtian ~70–66 Ma | |
Type | Geological formation |
Unit of | Puca Group |
Underlies | Santa Lucía Formation |
Overlies | Chaunaca Formation |
Lithology | |
Primary | Sandstone |
Other | Limestone |
Location | |
Coordinates | 19.5°S 65.8°W / -19.5; -65.8 |
Approximate paleocoordinates | 22.0°S 51.8°W / -22.0; -51.8 |
Region | Cochabamba, Chuquisaca & Potosí Departments |
Country | Bolivia |
Extent | Altiplano & Potosí Basins |
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