Also known as USGS 17166
Where: Panama (9.2° N, 79.7° W: paleocoordinates 6.7° N, 77.4° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Gatuncillo Formation, Late/Upper Eocene (37.2 - 33.9 Ma)
• Partly silicified sandy limestone. The maximum thickness of the formation here reaches 800 m. Fine-grained rocks (mudstone and siltstone) make up the bulk of the formation. Limestone, bentonic mudstone, sandstone, and conglomerate are minor constituents. The limestones are algal and foraminiferal na dmost have a thickness less than 1 meter,
• bed-level stratigraphic resolution
Environment/lithology: lithified, sandy, cherty/siliceous limestone
Size class: macrofossils
Preservation: replaced with silica
Reposited in the USNM
Collection methods: quarrying,
• Collected by Stewart (1948), also collections by Thomson (1948) and Woodring (1949). Material is also held (but not specified for any specific collection) at Stanford University, Acad. Nat. Sci. Phil., Corenell 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 42495: authorized by Austin Hendy, entered by Austin Hendy on 30.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
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Gastropoda | |
Velates perversus Gmelin 1791 snail | |
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? Hannatoma cf. emendorferi Olsson 1931 horn snail | |
"Turritella cf. carinata" = Haustator carinata
"Turritella cf. carinata" = Haustator carinata Lea 1833 turret shell | |
Sinum sp. Röding 1798 moon snail | |
Hipponix sp. Defrance 1819 hoof shell | |
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"Morum ("Oniscidia") sp." = Oniscidia1
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"Persicula semen" = Marginella semen2
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"Terebellum (Seraphs) belemnitum" = Seraphs1
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