Also known as USGS 6036; WG177d
Where: Colon, Panama (9.3° N, 79.9° W: paleocoordinates 9.1° N, 78.5° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: upper Gatun Member (Gatun Formation), Tortonian (11.6 - 7.2 Ma)
• LITHOSTRATIGRAPHY: From the upper part of the Gatun Formation. The Gatun Formation is subdivided 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 Sr dating for nearby sections indicates an age of approximately 9.5 Ma (Hendy, unpublished data).
• bed-level stratigraphic resolution
Environment/lithology: marine; poorly lithified siltstone
Size class: macrofossils
Preservation: original aragonite
Collected by MacDonald & Vaughan in 1911; reposited in the USNM
Collection methods: surface (float), surface (in situ),
• COLLECTOR: D.F. MacDonald and T.W. Vaughan, 1911. 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 145345: authorized by Austin Hendy, entered by Austin Hendy on 01.06.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Turritella (Torcula) altilira Conrad 1857 turret shell SUBSPECIES: Turritella (Torcula) altilira altilira
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"Oliva (Oliva) gatunensis" = Oliva gatunensis2
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"Antillophos (Antillophos) candei" = Antillophos candeanus2 d'Orbigny 1842 true whelk SUBSPECIES: Antillophos (Antillophos) candei gatunensis
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"Cavolina (Cavolina) triaspis n. sp." = Cavolinia3
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Bivalvia | |
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Anadara (Rasia) dariensis4 Brown and Pilsbry 1911 ark SUBSPECIES: Anadara (Rasia) dariensis dariensis
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Foraminifera | |
"Globigerina inflata" = Globoconella inflata1
"Globigerina inflata" = Globoconella inflata1 d'Orbigny 1839 | |
Orbulina universa1, "Globigerina conglobata" = Globigerinoides conglobatus1, "Globigerina sacculifera" = Trilobatus sacculifer1, Globigerina dubia1, Globigerina bulloides1, "Globigerina aequilateralis" = Globigerinella aequilateralis1
Orbulina universa1 d'Orbigny 1839
"Globigerina conglobata" = Globigerinoides conglobatus1 Brady 1879
"Globigerina sacculifera" = Trilobatus sacculifer1 Brady 1877
Globigerina bulloides1 d'Orbigny 1826
"Globigerina aequilateralis" = Globigerinella aequilateralis1 Brady 1879 | |
Tubothalamea | |
Foraminifera | |
"Textularia carinata" = Spiroplectammina carinata1
"Textularia carinata" = Spiroplectammina carinata1 d'Orbigny 1846 | |
Nodosariata | |