San Lorenzo Formation, Bolivia
| San Lorenzo Formation | |
|---|---|
| Stratigraphic range: Dapingian ~478–466 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
| Type | Geological formation |
| Lithology | |
| Primary | Shale, sandstone |
| Other | Quartzite |
| Location | |
| Coordinates |   San Lorenzo Formation, Bolivia (Bolivia) |
The San Lorenzo Formation is a Dapingian geologic formation of southern Bolivia. The dark gray, greenish, and black shale with thin intercalations of white-yellow quartzites were deposited in an open marine submarine fan environment.[1][2]
Fossil content
The formation has provided the following fossils:
- Didymograptus nitidus
- Dinorthis obispoensis
- Orthambonites calligramma
- Peelerophon oehlerti
- Tetragraptus quadribrachiatus
- Thysanopyge argentina
- Yutagraptus vdeflexus
- Phyllograptus cf. typus
- Dictyonema sp.
- Endoceras sp.
- Lecanospira sp.
- Megalaspidella sp.
- Pachendoceras sp.
See also
References
- ^ Camargo Syncline at Fossilworks.org
- ^ Camargo Syncline 2 at Fossilworks.org
Further reading
- R. Suárez Soruco. 1976. El sistema ordovícico en Bolivia. Revista Tecnica YPF Bolivia 5(2):111-123
