STRI Loc. 290476 [field] - Paraguachon [upper Jimol Fm] (Miocene of Colombia)

Where: La Guajira, Colombia (11.9° N, 71.4° W: paleocoordinates 11.2° N, 68.1° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: upper Jimol Member (Jimol Formation), Burdigalian (20.4 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Jimol Formation, which conformably overlies the Uipta Formation (early Miocene) and is conformably overlain by the Castilletes Formation. This area and nearby collections have been previously mapped as Castilletes Formaton (late Pliocene-early Pleistocene). AGE: Burdigalian, on the basis of macrofaunal composition; direct age established by extrapolation of Sr-isotope dating by enterer. STRATIGRAPHIC POSITION: From 42 m below Jimol/Castilletes contact.

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified siltstone

• SPECIFIC LITHOLOGY: Unconsolidated silty matrix. LITHIFICATION: Unlithified, as determined in the field and based on museum-reposited specimens.

Size classes: macrofossils, mesofossils

Preservation: original aragonite, original calcite

Collected by Hendy in 2011

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

• COLLECTOR: A. Hendy, 03/16/2011. REPOSITORY: Presently reposited at FLMNH, Gainesville.

Primary reference: A. J. W. Hendy, D. S. Jones, F. Moreno, V. Zapata, and C. Jaramillo. 2015. Neogene molluscs, shallow marine paleoenvironments, and chronostratigraphy of the Guajira Peninsula, Colombia. Swiss Journal of Palaeontology 134(1):45-75 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 157978: authorized by Austin Hendy, entered by Austin Hendy on 12.07.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for mollusca. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature, and species-resolution identifications.
Bivalvia
 Arcida - Arcidae
 Mytilida - Mytilidae
Mytilus sp. Linnaeus 1758 mussel
 Cardiida - Veneridae
Gouldia sp. Adams 1847 venus clam
Gastropoda
 Cerithioidea - Turritellidae
Turritella matarucana Hodson 1926 turret shell
Turritella machapoorensis Maury 1925 turret shell
 Sorbeoconcha - Cypraeidae
Muracypraea aff. hyaena Schilder 1939 cowry
 Neogastropoda - Melongenidae
Melongena consors Sowerby 1850 snail