Where: Panama (9.2° N, 80.0° W: paleocoordinates 8.9° N, 78.6° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: upper Gatun Member (Gatun Formation), Tortonian (11.6 - 7.2 Ma)
• Upper part of the Gatun Formation. The Gatun Formation is sibdivided into three faunal zones (proposed by Thomson and Keen, 1946): lower, middle, and upper. AGE: Late Miocene, on the basis of microfossil biostratigraphy (see Collins and Coates, 1999), refined by enterer to Tortonian based on more recent dating (Hendy, 2012). Sr dating for nearby sections indicates an age of approximately 8.5 Ma (Hendy, unpublished data).
• bed-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified, fine-grained, silty sandstone
Size class: macrofossils
Preservation: original aragonite
Reposited in the USNM
Collection methods: surface (in situ),
• COLLECTOR: Not stated in text. REPOSITORY: USNM.
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 93053: authorized by Austin Hendy, entered by Austin Hendy on 24.12.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
"Architectonica (Architectonica) nobilis" = Architectonica nobilis4
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"Turritella (Torcula) mimetes" = Turritella (Broderiptella) mimetes
"Turritella (Torcula) mimetes" = Turritella (Broderiptella) mimetes Brown and Pilsbry 1911 turret shell | |
Polinices stanislasmeunieri Maury 1917 moon snail
Stigmaulax guppiana Toula 1909 moon snail | |
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Cancellaria sathra2, "Cancellaria (Cancellaria) tapeina" = Cancellaria tapeina6, "Cancellaria (Cancellaria) apimela" = Cancellaria apimela6
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"Crassispira (Hindsiclava) consors" = Hindsiclava consors6
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"Oliva (Oliva) reticularis" = Oliva reticularis5
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"Murex (Murex) polynematicus" = Vokesimurex polynematicus4
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"Distorsio (Rhysema) decussata" = Distorsio decussata4
"Distorsio (Rhysema) decussata" = Distorsio decussata4 Valenciennes 1832 snail SUBSPECIES: Distorsio (Rhysema) decussata gatunensis
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Bivalvia | |
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"Glycymeris (Tucetona) epacra" = Tucetona7
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Trachycardium (Dallocardia) dominicense8 Gabb 1873 cockle SUBSPECIES: Trachycardium (Dallocardia) dominicense hadratatum
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Dosinia (Dosinia) delicatissima8, Chione (Chionopsis) tegulum8, Lamelliconcha cora8, "Macrocallista (Paradione) maculata" = Macrocallista maculata8
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