STRI Loc. 290420A - Aulechit-Castilletes Rd [middle Jimol Fm] (Miocene of Colombia)

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• coordinate based on unpublished field data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: 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: Probably from the middle section of Jimol Formation, but uncertain as from a faulted area; 144 m below Jimol-Castilletes Fm contact.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, fine-grained, shelly/skeletal sandstone

• ENVIRONMENT: Shallow sub tidal siliciclastic setting, normal salinity; 5-30 m.
• SPECIFIC LITHOLOGY: Poorly consolidated rusty sand 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 156795: 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 - Turritellidae
Turritella cocoditana Hodson 1926 turret shell
Turritella machapoorensis Maury 1925 turret shell
 Cerithioidea - Potamididae
Potamides suprasulcatus Gabb 1873 horn snail
 Cerithioidea - Modulidae
Modulus tamanensis Maury 1925 snail
 Neogastropoda - Buccinidae
 Neogastropoda - Melongenidae
Melongena consors Sowerby 1850 snail
 Neogastropoda - Turbinellidae
Turbinella falconensis Hodson 1931 snail
 Neogastropoda - Conidae
Conus molis Brown and Pilsbry 1911 cone shell
Conus talis Jung 1965 cone shell
 Sorbeoconcha - Strombidae
Strombus sp. Linnaeus 1758 conch
 Sorbeoconcha - Naticidae
Stigmaulax sp. Morch 1852 moon snail
 Heterostropha - Architectonicidae
Architectonica nobilis Röding 1798 sundial
Bivalvia
 Cardiida - Veneridae
Veneridae indet. Rafinesque 1815 venus clam
 Cardiida - Cardiidae
 Arcida - Arcidae
Anadara (Rasia) cornellana Hodson et al. 1927 ark
 Ostreida - Ostreidae
Crassostrea sp. Sacco 1897 oyster