| El Molino Formation | |
|---|---|
| Stratigraphic range: Maastrichtian ~ | |
| Type | Geological formation |
| Unit of | Puca Group |
| Underlies | Santa Lucía Formation |
| Overlies | Chaunaca Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Limestone |
| Location | |
| Coordinates | 19°30′S 65°48′W / 19.5°S 65.8°W |
| Approximate paleocoordinates | 22°00′S 51°48′W / 22.0°S 51.8°W |
| Region | Cochabamba, Chuquisaca & Potosí Departments |
| Country |  Bolivia |
| Extent | Altiplano & Potosí Basins |
  El Molino Formation (Bolivia) | |
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.
- ^ Buffetaut, 1987
- ^ Lockley et al., 2002, p.389
- ^ La Palca village at Fossilworks.org
- ^ Cal Orcko tracksite at Fossilworks.org
- ^ Leonardi, 1994, p.39