STRI Loc. 290419 - Aulechit-Castilletes Rd [lower Jimol Fm] (Miocene of Colombia)

Also known as STRI Sample 16843, 16973

Where: La Guajira, Colombia (11.9° N, 71.4° W: paleocoordinates 11.1° N, 68.1° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: lower 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: Probably from the lower section of Jimol Formation, but uncertain as from a faulted area; 165 m below Jimol-Castilletes Fm contact.

• bed-level stratigraphic resolution

Environment/lithology: lagoonal; poorly lithified, fine-grained, pebbly, shelly/skeletal sandstone

• ENVIRONMENT: Shallow sub tidal siliciclastic setting, normal salinity; 5-30 m.
• SPECIFIC LITHOLOGY: Poorly consolidated rusty medium 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 2011

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

• COLLECTOR: A. Hendy, 03/07/2011. 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 156794: authorized by Austin Hendy, entered by Austin Hendy on 31.05.2014

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.
Gastropoda
 Cerithioidea - Potamididae
Potamides suprasulcatus Gabb 1873 horn snail
Bivalvia
 Cardiida - Veneridae
Gouldia sp. Adams 1847 venus clam
 Cardiida - Semelidae
Abra sp. Lamarck 1818 abra
 Cardiida - Solecurtidae
Tagelus sp. Gray 1847 clam
 Ostreida - Ostreidae
Crassostrea sp. Sacco 1897 oyster
 Pectinida - Pectinoidae
Lindapecten buchivacoanus Hodson et al. 1927 scallop