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El Molino Formation
Geological formation in Bolivia From Wikipedia, the free encyclopedia
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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.
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Fossil content
Other fossils retrieved from the formation are:[6]
- Coelodus toncoensis
- Dagetella sudamericana
- Dasyatis branisai, D. molinoensis, D. schaefferi
- Gasteroclupea branisai
- Ischyrhiza hartenbergeri
- Latinopollia suarezi
- Lepidotyle enigmatica
- Ligabueichnum bolivianum[5]
- Noterpeton bolivianum
- Phaerodusichthys taverni
- Pucabatis hoffstetteri
- Pucapristis branisi
- Stephanodus minimus
- Lepidosiren cf. paradoxa
- Andinichthys sp.
- Ceratodus sp.
- Enchodus sp.
- Lepisosteus sp.
- Pucalithus sp.[7]
- Rhineastes sp.
- Santosius sp.
- Anura indet.
- Coelurosauria indet.
- Crocodylia indet.
- Dryolestidae indet.
- Eutheria indet.
- cf. Cyprinodontiformes indet.
- Gymnophiona indet.
- Heterotidinae indet.
- ?Madtsoiidae indet.
- Podocnemididae indet.
- Pycnodontidae indet.
- Sauropoda indet.
- Siluriformes indet.
- Tetragonopterinae indet.
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See also
References
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