The Obispo Formation is a
Dapingian geologic
formation of southern Bolivia. The
shale
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especial ...
s and
siltstone
Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt. It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility.Blatt ''et al.'' 1980, p ...
s were deposited in an open marine
environment.
Molle Punku, Huerta Maya, and Pantipata
at Fossilworks
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database
The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals ...
.org
Fossil content
The formation has provided the following fossils:
* '' Camerella sp.''
* '' Ceratiocaris sp.''
* '' Didymograptus sp.''
* '' Dinorthis sp.''
* '' Endoceras sp.''
* '' Euorthisina sp.''
* '' Hoekaspis sp.''
* '' Hypermecaspis sp.''
* '' Incorthis sp.''
* '' Megistaspis sp.''
* '' Niobides sp.''
* '' Orthis sp.''
* '' Orthoceras sp.''
* '' Pachendoceras sp.''
* '' Thysanopyge sp.''
See also
* List of fossiliferous stratigraphic units in Bolivia
This is a list of fossiliferous stratigraphic units in Bolivia.
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List of fossiliferous stratigraphic units
See also
*
* Gomphothere fossils in Bolivia
* South American land mammal ages
* List of fossiliferous stratigraphic u ...
References
{{reflist, 30em
Further reading
* L. Branisa. 1965. Los fosiles guias de Bolivia: I. Paleozoico. Boletin de Servicio Geologico de Bolivia. La Paz, Bolivia 6:1-282
* A. Pribyl and J. Vanek. 1980. Ordovician trilobites of Bolivia. Rozpravy Ceskoslovenske Akademie Ved. Rada Matematickych a Prirodnich Ved. Academia Praha, Prague, Czechoslovakia 90(2):1-90
Geologic formations of Bolivia
Ordovician System of South America
Ordovician Bolivia
Dapingian
Shale formations
Siltstone formations
Open marine deposits
Ordovician southern paleotemperate deposits
Paleontology in Bolivia
Formations