El 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.

For other uses, see Molino Formation.
El Molino Formation
Stratigraphic range: Maastrichtian
~70–66 Ma
↓
TypeGeological formation
Unit ofPuca Group
UnderliesSanta Lucía Formation
OverliesChaunaca Formation
Lithology
PrimarySandstone
OtherLimestone
Location
Coordinates19.5°S 65.8°W / -19.5; -65.8
Approximate paleocoordinates22.0°S 51.8°W / -22.0; -51.8
RegionCochabamba, Chuquisaca & Potosí Departments
Country Bolivia
ExtentAltiplano & Potosí Basins
El Molino Formation (Bolivia)

Fossil content

Other fossils retrieved from the formation are:[6]

See also

References
  1. Buffetaut, 1987
  2. Lockley et al., 2002, p.389
  3. La Palca village at Fossilworks.org
  4. Cal Orcko tracksite at Fossilworks.org
  5. Leonardi, 1994, p.39
  6. Pajcha Pata at Fossilworks.org
  7. Leonardi, 1994, p.40

Bibliography
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