STRI Loc. 290817 - Road to Siapana [upper Jimol Fm] (Miocene of Colombia)

Also known as AH140120

Where: La Guajira, Colombia (12.0° N, 71.3° W: paleocoordinates 11.2° N, 68.0° 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• coordinate based on unpublished field data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 unconformably 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 99 m below the Jimol/Castilletes contact.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, shelly/skeletal siltstone

• ENVIRONMENT: Shallow marine (0-15 m), siliciclastic.
• SPECIFIC LITHOLOGY: Rubbly silty matrix. LITHIFICATION: 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 2014

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

• COLLECTOR: A. Hendy, 01/21/2014. 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 156493: authorized by Austin Hendy, entered by Austin Hendy on 21.05.2014

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.
Gastropoda
 Sorbeoconcha - Vermetidae
Petaloconchus sculpturatus Lea 1846 worm shell
 Sorbeoconcha - Strombidae
Strombus sp. Linnaeus 1758 conch
 Sorbeoconcha - Thersiteidae
Orthaulax sp. Gabb 1872 snail
 Neogastropoda - Olividae
Oliva sp. Bruguière 1789 olive snail
 Neogastropoda - Turridae
Polystira sp. Woodring 1928 turrid
 Neogastropoda - Conidae
Conus talis Jung 1965 cone shell
 Trochoidea - Turbinidae
Turbo sp. Linnaeus 1758 snail
Bivalvia
 Ostreida - Gryphaeidae
Hyotissa sp. Stenzel 1971 oyster
 Lucinida - Lucinidae
Anodontia sp. Link 1807 clam
 Cardiida - Veneridae
Macrocallista cf. maculata Linnaeus 1758 venus clam
 Carditida - Crassatellidae
Eucrassatella venezuelana Hodson 1927 clam