Also known as USGS 16912
Where: Panama (9.4° N, 79.8° W: paleocoordinates 9.1° N, 78.4° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: lower Gatun Member (Gatun Formation), Tortonian (11.6 - 7.2 Ma)
• Lower 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: Tortonian based on more recent dating (Hendy, 2012). Sr dating for nearby sections indicates an age of approximately 11.5 Ma (Hendy, unpublished data)
• bed-level stratigraphic resolution
Environment/lithology: marine; poorly lithified, fine-grained, silty sandstone
•GENERAL: Massive medium-to very fine-grained sandstone and siltstone. Somewhat calcareous, or marly, somewhat tuffaceous, and with a clay-like matrix. The lower part of the formation consists principally of medium-very fine-grained sandstone.
Size class: macrofossils
Reposited in the USNM
Collection methods: quarrying,
• Collected by Thomson and Woodring (1947). 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 52169: authorized by Austin Hendy, entered by Austin Hendy on 28.07.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Trochita spirata Forbes 1852 slipper shell | |
Turritella matarucana Hodson 1926 turret shell | |
Polinices stanislasmeunieri Maury 1917 moon snail
Natica (Naticarius) stenopa n. sp. moon snail | |
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"Cancellaria (Euclia) dinota" = Euclia dinota7, "Cancellaria (Euclia) codazzii" = Euclia codazzii7, Cancellaria sp.3, Cancellaria acalypta7, Bivetiella dariena3
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Strombina (Strombina) lessepsiana6, Sincola (Dorsina) pigea2, Anachis (Costoanachis) mira6, Anachis (Costoanachis) stibara n. sp.6
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"Murex (Murex) polynematicus" = Vokesimurex polynematicus5, Eupleura thompsoni n. sp.6, "Typhis (Talityphis) alatus" = Typhina alata6, Cymia (Cymia) cheloma n. sp.6
"Typhis (Talityphis) alatus" = Typhina alata6 Sowerby 1850 murex snail Subspecies: Typhis (Talityphis) alatus obesus
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Bivalvia | |
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Lamelliconcha cora9, "Macrocallista (Paradione) maculata" = Macrocallista maculata9, Chione (Chionopsis) tegulum9, "Tivela mactroides" = Tivela (Tivela) mactroides9, Cyclinella cyclica9
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"Tellina (Eurytellina) punicea" = Eurytellina punicea9
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"Trigoniocardia (Apiocardia) aminensis" = Trigoniocardia (Trigoniocardia) aminensis9, Trachycardium (Mexicardia) dominicanum9
"Trigoniocardia (Apiocardia) aminensis" = Trigoniocardia (Trigoniocardia) aminensis9 Dall 1900 cockle
Trachycardium (Mexicardia) dominicanum9 Dall 1900 cockle Subspecies: Trachycardium (Mexicardia) dominicanum
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Anadara (Rasia) dariensis8 Brown and Pilsbry 1911 ark Subspecies: Anadara (Rasia) dariensis dariensis
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