ammonites
Locality 191 - Toro Limestone (Miocene of Panama)

Also known as USGS# 8371

Where: Panama (9.6° N, 79.6° W: paleocoordinates 9.4° N, 78.7° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Toros Limestone Member (Chagres Sandstone Formation), Messinian (7.2 - 5.3 Ma)

• STRATIGRAPHIC RELATIONS: From Olsson's Anomia zone. Chagres Sandstone overlies and partly overlaps the Gatun Fm. Calcareous strata at the abse of the formation throughout most of the outcrop area in the Canal Zone constitute the Toro Limestone Mbr. The unit is as much as 1000 ft thick. AGE: Late Miocene (late Tortonian-Messinian) according to Collins and Coates 1999); Messinian age more probable.

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; poorly lithified, medium-grained, coarse, shelly/skeletal, sandy limestone

• No specific environmental data presented.
• GENERAL LITHOLOGY: Calcareous deposit consisting principally of lime-cemented coquina made up of small fragments of barnacles, shells, echinoid spines, and corals; cross-bedding common; lenses of medium-coarse-grained sandstone occur in the coquina. SPECIFIC LITHOLOGY: Coquina limestone.

Size class: macrofossils

Reposited in the CAS, PRI, USNM

Collection methods: quarrying,

• COLLECTOR: E.R. Lloyd and G.M. Bevier (1918). RESPOSITORIES: Material is also held (but not specified for any specific collection) at Stanford University, Acad. Nat. Sci. Phil., Cornell University, PRI, U. Cal. and Cal. Acad. Sci.

Primary reference: W. P. Woodring. 1957. Geology and Paleontology of Canal Zone and adjoining parts of Panama. United States Geological Survey Professional Paper 306(A) [A. Miller/A. Hendy/A. Hendy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61180: authorized by Austin Hendy, entered by Austin Hendy on 30.05.2006

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)