STRI Loc. 290414 - Aulechit-Castilletes Rd [middle Jimol Fm] (Miocene of Colombia)

Also known as STRI Sample 16868, 16982

Where: La Guajira, Colombia (12.0° 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• coordinate based on unpublished field data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: Probably from the middle section of Jimol Formation, not far above Shirrua type section, probably slightly higher stratigraphically than STRI 290413; 143 m below Jimol-Castilletes Fm 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 156753: 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.
Anthozoa
 Scleractinia - Faviidae
Faviidae indet. Gregory 1900 stony coral
Bivalvia
 Mytilida - Mytilidae
Mytilus sp. Linnaeus 1758 mussel
 Arcida - Glycymerididae
Glycymeris sp. Da Costa 1778 clam
Tucetona democraciana Hodson et al. 1927 clam
 Arcida - Arcidae
 Ostreida - Ostreidae
Crassostrea sp. Sacco 1897 oyster
 Ostreida - Gryphaeidae
Hyotissa sp. Stenzel 1971 oyster
 Pectinida - Pectinoidae
Lindapecten buchivacoanus Hodson et al. 1927 scallop
Spondylus sp. Linnaeus 1758 scallop
 Carditida - Crassatellidae
 Carditida - Carditidae
Glyptoactis paraguanensis Hodson 1931 clam
 Cardiida - Cardiidae
 Cardiida - Veneridae
"Dosinia delicatissima" = Dosinia (Dosinia) delicatissima Brown and Pilsbry 1913 venus clam
Gouldia sp. Adams 1847 venus clam
Macrocallista cf. maculata Linnaeus 1758 venus clam
"Cyclinella venezuelana" = Cyclinella cyclica Guppy 1866 venus clam
Clementia (Clementia) dariena Conrad 1855 venus clam
Gastropoda
 Trochoidea - Trochidae
Calliostoma sp. Swainson 1840 top snail
 Cerithioidea - Potamididae
Potamides suprasulcatus Gabb 1873 horn snail
 Cerithioidea - Turritellidae
Turritella cocoditana Hodson 1926 turret shell
Turritella machapoorensis Maury 1925 turret shell
Turritella matarucana Hodson 1926 turret shell
Turritella (Bactrospira) cf. altilira Conrad 1857 turret shell
 Sorbeoconcha - Naticidae
Naticarius sp. Dumeril 1806 moon snail
Polinices nelsoni moon snail
Neverita (Glossaulax) paraguanensis Hodson 1927 moon snail
 Sorbeoconcha - Cypraeidae
Muracypraea aff. hyaena Schilder 1939 cowry
 Neogastropoda - Buccinidae
 Neogastropoda - Ancillariidae
Eburna sp. Lamarck 1801 snail
 Neogastropoda - Olividae
Oliva sp. Bruguière 1789 olive snail
 Neogastropoda - Turridae
Polystira sp. Woodring 1928 turrid
 Sorbeoconcha - Thersiteidae
Orthaulax sp. Gabb 1872 snail
 Architaenioglossa - Ampullinidae
Pachycrommium sp. Woodring 1928 snail