Upper Calapuja Formation, Cerro Monterio, Peru (Silurian of Peru)

Where: Peru (15.3° S, 70.3° W: paleocoordinates 44.3° S, 120.2° W)

• coordinate stated in text

• local area-level geographic resolution

When: Llandovery (443.4 - 433.4 Ma)

• Formation may include Ashgillian as well.

• formation-level stratigraphic resolution

Environment/lithology: marine; sandstone and gray shale

• k!stant flysch, intercalated between the more resistant lower Calapuja [Caradocian], on which it rests conformably, and the Lampa Formation above. It is an alternating sequence of thin-bedded, fine-grained Sst and gray lutite. Sst:shale ratio about 1:3. Thin, carbonate lentils, some of which contain fossils are numerous, and some lentils contain cone-in-cone structures."

Primary reference: G. Laubacher, A. J. Boucot, and J. Gray. 1982. Additions to Silurian stratigraphy, lithofacies, biogeography and paleontology of Bolivia and southern Peru. Journal of Paleontology 56(5):1138-1170 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 25079: authorized by Michael Foote, entered by Michael Foote on 27.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Strophomenida - Leptostrophiidae
Eostropheodonta sp.
Eostropheodonta sp. Bancroft 1949
Rhynchonellata
 Orthida - Heterorthidae
? Heterorthella sp.
 Athyridida - Meristellidae
"? Cryptothyrella sp." = Hindella
"? Cryptothyrella sp." = Hindella Davidson 1882
 Rhynchonellida -
Rhynchonellida indet.
 Rhynchonellida - Eatoniidae
Clarkeia durrelli n. sp.
 Rhynchonellida - Leptocoeliidae
"Harringtonina paraguayensis" = Anabaia
"Harringtonina paraguayensis" = Anabaia