STRI Loc. 290681 - W of Paraguachon [middle Jimol Fm] (Miocene of Colombia)

Also known as STRI Sample 37852

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• coordinate based on unpublished field data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: middle 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 upper part of middle section of Jimol Formation; from 141 m below the Jimol/Castilletes contact.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified siltstone

• ENVIRONMENT: Shallow sub tidal siliciclastic setting, normal salinity; 5-30 m.
• SPECIFIC LITHOLOGY: Poorly consolidated silty matrix. LITHIFICATION: Poorly lithified, as determined in the field and based on museum-reposited specimens.

Size classes: macrofossils, mesofossils

Preservation: original calcite, replaced with calcite

Collected by Hendy in 2013

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

• COLLECTOR: A. Hendy, 01/26/2013. REPOSITORY: Presently reposited at Universidad del Norte, Colombia.

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 156720: authorized by Austin Hendy, entered by Austin Hendy on 29.05.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Comprises characteristic molluscs. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature, and species-resolution identifications.
Bivalvia
 Arcida - Glycymerididae
Tucetona democraciana Hodson et al. 1927 clam
 Pectinida - Pectinoidae
Leopecten sp. Masuda 1971 scallop
 Cardiida - Cardiidae
Gastropoda
 Naticoidea - Naticidae
 Architectonicoidea - Architectonicidae
Architectonica nobilis Röding 1798 sundial
Paraleptopecten quirosensis
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