Woodring Loc. 150 - Gatun [middle Gatun Fm] (Miocene of Panama)

Also known as USGS 8377; WG150

Where: Colon, Panama (9.3° N, 79.9° W: paleocoordinates 9.0° N, 78.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: middle Gatun Member (Gatun Formation), Tortonian (11.6 - 7.2 Ma)

• LITHOSTRATIGRAPHY: From middle 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 Sr dating for nearby sections indicates an age of approximately 10.1 Ma (Hendy, unpublished data).

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, fine-grained, silty sandstone

• No specific environmental data presented.
• LITHOLOGY: Soft, silty fine-grained sandstone.

Size class: macrofossils

Preservation: original aragonite

Collected by Olsson in 1918; reposited in the USNM

Collection methods: surface (float), surface (in situ),

• COLLECTOR: A.A. Olsson, 1918. 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 145355: authorized by Austin Hendy, entered by Austin Hendy on 01.06.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropods and bivalves. NOMENCLATURE: Authoritative publications, with modern nomenclature, and species-resolution identifications.
Bivalvia
 Carditida - Carditidae
Venericardia (Glyptoactis) aversa2 Pilsbry and Johnson 1917 clam
 Pholadida - Corbulidae
 Cardiida - Veneridae
Dosinia (Dosinia) delicatissima2 Brown and Pilsbry 1913 venus clam
Cyclinella cyclica2 Guppy 1866 venus clam
 Cardiida - Tellinidae
Tellina (Eurytellina) nitens2 Adams 1845 tellin clam
 Cardiida - Cardiidae
"Laevicardium laevigatum" = Laevicardium serratum2
"Laevicardium laevigatum" = Laevicardium serratum2 Linnaeus 1758 cockle
 Lucinida - Lucinidae
Divaricella cf. comis2 Olsson 1964 clam
Gastropoda
 Cerithiacea - Turritellidae
"Turritella bifastigata" = Turritella (Broderiptella) bifastigata
"Turritella bifastigata" = Turritella (Broderiptella) bifastigata Nelson 1870 turret shell
 Tonnoidea - Bursidae
Malea camura1 Guppy 1866 tun shell