STRI Loc. 290415 - Aulechit-Castilletes Rd [middle Jimol Fm] (Miocene of Colombia)

Also known as STRI Sample 16870, 38480

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• coordinate based on unpublished field data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, not far above Shirrua type section, probably somewhat higher stratigraphically than STRI 290414; from 120 m below the Jimol/Castilletes contact.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, medium-grained, 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, 03/06/2011. 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 156754: authorized by Austin Hendy, entered by Austin Hendy on 30.05.2014

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 machapoorensis Maury 1925 turret shell
Turritella cocoditana Hodson 1926 turret shell
Turritella (Bactrospira) cf. altilira Conrad 1857 turret shell
 Cerithioidea - Potamididae
Potamides suprasulcatus Gabb 1873 horn snail
 Neogastropoda - Melongenidae
Melongena consors Sowerby 1850 snail
 Neogastropoda - Turbinellidae
Turbinella falconensis Hodson 1931 snail
 Sorbeoconcha - Naticidae
 Heterostropha - Architectonicidae
Architectonica nobilis Röding 1798 sundial
Bivalvia
 Arcida - Arcidae
 Ostreida - Ostreidae
Crassostrea sp. Sacco 1897 oyster
 Pholadida - Corbulidae
Caryocorbula fortis Jung 1965 clam
 Cardiida - Veneridae
Veneridae indet. Rafinesque 1815 venus clam
Gouldia sp. Adams 1847 venus clam
Clementia (Clementia) dariena Conrad 1855 venus clam
"Cyclinella venezuelana" = Cyclinella cyclica Guppy 1866 venus clam
"Dosinia delicatissima" = Dosinia (Dosinia) delicatissima Brown and Pilsbry 1913 venus clam
Chione sp. von Mühlfield 1811 venus clam
 Cardiida - Mactridae
Mulinia sp. Gray 1837 clam
 Cardiida - Cardiidae
 Carditida - Carditidae
Glyptoactis paraguanensis Hodson 1931 clam
Malacostraca
 Decapoda - Callianassidae
Callianassidae indet. Dana 1852 decapod
Paraleptopecten quirosensis
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