STRI Loc. 290305, Sample 1 [lower Gatun Fm] (Miocene of Panama)

Also known as Urbanization Alborada

Where: Colon, Panama (9.3° N, 79.8° W: paleocoordinates 9.1° N, 78.4° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

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

• STRATIGRAPHIC RELATIONS: From the Gatun Fm, which regionally overlies the Caimito Fm or Mesozoic basement. AGE: Tortonian, on the basis of revised chronostratigraphy (Hendy, unpublished data); direct date is extrapolated from sequence of 87Sr/86Sr data calibrated to stratigraphic height. STRATIGRAPHIC POSITION: From lower member of the Gatun Formation.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, shelly/skeletal, sandy siltstone

• ENVIRONMENT: Shallow-marine, siliciclastic environment.
• SPECIFIC LITHOLOGY: Sandy siltstone, some bioturbation, dense packing of shells. LITHIFICATION: Poorly-lithified, based on observations of material.

Size classes: macrofossils, mesofossils

Preservation: original aragonite

Collected by Hendy in 2011; reposited in the FLMNH

Collection methods: surface (in situ),

• COLLECTOR: A. Hendy, 1/30/2011. REPOSITORY: FLMNH, Gainsville, Florida.

Primary reference: A. J. W. Hendy. 2013. Spatial and stratigraphic variation in marine paleoenvironments in the Late Miocene Gatun Formation, Isthmus of Panama. Palaios [A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 142895: authorized by Austin Hendy, entered by Austin Hendy on 18.04.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropods, bivalves, scaphopods, as well as echinoids (where present). NOMENCLATURE: Not an authoritative publication, but with modern nomenclature and species-resolution identifications.
Gastropoda
 Cerithioidea - Turritellidae
"Turritella altilira" = Turritella (Bactrospira) altilira Conrad 1857 turret shell
Turritella gatunensis Conrad 1857 turret shell
 Heterostropha - Architectonicidae
Architectonica nobilis Röding 1798 sundial
Bivalvia
 Pectinida - Pectinoidae
Leptopecten ecnomius Woodring 1982 scallop
 Pholadida - Corbulidae
Caryocorbula prenasuta Olsson 1964 clam
 Cardiida - Veneridae
Costacallista leiotera, "Macrocallista (Paradione) maculata" = Macrocallista maculata
Costacallista leiotera Woodring 1982 venus clam
"Macrocallista (Paradione) maculata" = Macrocallista maculata Linnaeus 1758 venus clam
 Cardiida - Cardiidae
Trigoniocardia sp. Dall 1900 cockle
Mexicardia dominicanum Dall 1900 cockle
 Cardiida - Tellinidae
Psammacoma gatunensis Toula 1909 tellin clam
 Cardiida - Semelidae
Ervilia sp. Turton 1822 clam