Las Cruces-Atascadero road (Eocene of Peru)

Where: Peru (4.4° S, 80.9° W: paleocoordinates 6.9° S, 73.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Late/Upper Eocene (37.2 - 33.9 Ma)

Environment/lithology: shallow subtidal; brown, gray limestone

• Algal debris comprises from 15 to 35 percent of the rock in the specimens studied. In addition there are numerous Foraminifera both large and small, ostracods, fragments of shells of

•mollusks, echinoid spines, and Bryozoa, all in a gray matrix of fine calcium-carbonate paste.

• brownish gray organic limestone

Size classes: mesofossils, microfossils

Collected by Benton Stone

• Collection sent to the Colorado School of Mines Museum

Primary reference: J. H. Johnson and I. A. Tafur. 1952. Coralline Algae from the Eocene Atascadero Limestone. Journal of Paleontology 26(4):537-543 [W. Kiessling/M. Krause]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 147804: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 12.07.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Florideophyceae
 Hapalidiales - Corallinophycidae
Mesophyllum atascaderum, Mesophyllum pueranum, Mesophyllum peruvianum, Lithothamnion limaensum, Lithothamnion faurai, Lithothamnion cf. concretum, Lithothamnion wallisium
Lithothamnion wallisium Johnson and Tafur 1952
 Sporolithales - Corallinophycidae
"Archaeolithothamnion lugeoni" = Sporolithon
"Archaeolithothamnion lugeoni" = Sporolithon
 Corallinales - Corallinophycidae
Lithophyllum sierrablancae, Lithophyllum incaensum, Lithophyllum "sp. A", Lithophyllum "sp. B", Lithoporella (Mastophora) melobesioides
Lithophyllum sierrablancae
Lithophyllum sierra-blancae
Lithophyllum "sp. A" Philippi 1837
Lithophyllum "sp. B" Philippi 1837