STRI Loc. 290821 [quadrat B] - Near Huaina [middle Jimol Fm] (Miocene of Colombia)

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• coordinate based on unpublished field data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: 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 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 112 m below Jimol/Castilletes contact.

• bed-level stratigraphic resolution

Environment/lithology: lagoonal; unlithified siltstone

• ENVIRONMENT: Shallow marine (0-15 m), siliciclastic.
• SPECIFIC LITHOLOGY: Unconsolidated silty matrix. LITHIFICATION: Unlithified, as determined in the field and based on museum-reposited specimens.

Size classes: macrofossils, mesofossils

Preservation: original aragonite, original 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 161093: authorized by Austin Hendy, entered by Austin Hendy on 01.09.2014

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. ABUNDANCE: Estimate based on relative abundance within a 25cm2 quadrat; A=abundant (10 or more specimens per quadrat; C=common (3-9 specimens per quadrat; R=rare (1-2 specimens per quadrate).
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Gastropoda
 Cerithioidea - Turritellidae
Turritella matarucana Hodson 1926 turret shell
 Cerithioidea - Potamididae
Potamides suprasulcatus Gabb 1873 horn snail
 Neogastropoda - Muricidae
Eupleura kugleri Jung 1965 murex snail
Bivalvia
 Ostreida - Ostreidae
Crassostrea sp. Sacco 1897 oyster
 Arcida - Arcidae
 Cardiida - Tellinidae
"Psammacoma falconensis" = Psammacoma gatunensis
"Psammacoma falconensis" = Psammacoma gatunensis Toula 1909 tellin clam
 Cardiida - Veneridae
"Chionopsis paraguanensis" = Chione (Chionopsis) tegulum Brown and Pilsbry 1911 venus clam
Macrocallista cf. maculata Linnaeus 1758 venus clam
Gouldia sp. Adams 1847 venus clam
 Pholadida - Corbulidae