Woodring Loc. 179, western area [upper Gatun Fm] (Miocene of Panama)

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 Sr dating for nearby sections indicates an age of approximately 8.5 Ma (Hendy, unpublished data).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

• No specific environmental data presented.
• LITHOLOGY: Siliciclastic. LITHIFICATION: Poorly-lithified, on the basis of figured specimens and outcrop observations.

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. 1973. Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (additions to gastropods, scaphopods, pelecypods: Nuculidae to Malleidae). United States Geological Survey Professional Paper 306(E):453-539 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93055: authorized by Austin Hendy, entered by Austin Hendy on 24.12.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Authoritative publication, with relatively modern nomenclature, and species-resolution identifications.
Bivalvia
 Nuculida - Nuculidae
Acila (Acila) isthmica Brown and Pilsbry 1911 divaricate nutclam
Gastropoda
 Neogastropoda - Buccinidae
Hanetia dali1 true whelk
SUBSPECIES: Hanetia dali medioamericana
 Neogastropoda - Olividae
"Oliva (Oliva) reticularis" = Oliva reticularis1
"Oliva (Oliva) reticularis" = Oliva reticularis1 Lamarck 1811 olive snail
 Neogastropoda - Terebridae
Strioterebrum spiriferum2 Dall 1895 auger snail
Terebra (Paraterebra) aff. taurina2 Lightfoot 1786 auger snail
Scaphopoda
 Dentaliida - Dentaliidae