PRI Pitt Coll. - Isla Payardi [middle Gatun Fm] (Miocene of Panama)

Also known as PRI Acc. 1267; GA-3

Where: Panama (9.4° N, 79.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• STRATIGRAPHIC RELATIONS: The Gatun Fm rests unconformably on formations of different ages in different parts of the Panama Canal Basin. To the east of Colon, the Gatun Fm rests nonconformably on unamed Cretaceous volcanics. To the west of Colon, including several islands in Lake Gatun, the Gatun Fm rests with angular unconformity on the upper Oligocene Caimito Fm. 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 Sr dating for nearby sections indicates an age of approximately 11.5 Ma (Hendy, unpublished data).

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified siliciclastic sediments

• ENVIRONMENT: from Collins et al. (1999), open, inner neritic.
• LITHOLOGY: Not recorded, but certainly silciclastic. LITHIFICATION: Poorly lithified, on the basis of observation of specimens.

Size class: macrofossils

Collected by Pitt; reposited in the PRI

Collection methods: bulk, sieve,

• COLLECTORS: B. & L. Pitt. REPOSITORIES: PRI, Ithaca.

Primary reference: A. J. W. Hendy, D. P. Buick, K. V. Bulinski, C. A. Ferguson, and A. I. Miller. 2008. Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions. [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 82129: authorized by Austin Hendy, entered by Austin Hendy on 23.07.2008

Creative Commons license: CC0 (CC0)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda, bivalvia and scaphopoda. NOMENCLATURE: Base off of older literature (Woodring, 1957-1980), and therefore variable in quality and resolution. IDENTIFIER A. Hendy and C. Ferguson.
Bivalvia
 Pholadida - Corbulidae
"Corbula gatunensis" = Bothrocorbula (Hexacorbula) gatunensis Toula 1909 clam
 Ostreida - Gryphaeidae
Hyotissa haitensis Sowerby 1850 oyster
 Pectinida - Pectinoidae
Leptopecten ecnomius Woodring 1982 scallop
Gastropoda
 Neogastropoda - Nassariidae
Calophos ectyphus Woodring 1964 snail
 Neogastropoda - Buccinidae
Cymatophos veatchi Olsson 1922 true whelk
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
Conus burckhardti Bose 1906 cone shell
 Neogastropoda - Turridae
Polystira sp. Woodring 1928 turrid
 Neogastropoda - Terebridae
Oreoterebra sp. Olsson 1967 auger snail
Panaterebra cucurrupiensis Oinomikado 1939 auger snail
Strioterebrum sp. Sacco 1891 auger snail
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell
Turritella gatunensis Conrad 1857 turret shell
Torcula alitilira turret shell
 Neotaenioglossa - Calyptraeidae
Crucibulum (Crucibulum) sp. Schumacher 1817 slipper shell
Crucibulum (Dispotaea) springvaleense Rutsch 1942 slipper shell