Macarao Formation: Late Eocene, Colombia
collected by Thomas

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Nodosariata - Nodosariida - Nodosariidae
Robulus sp. Montfort 1808
Lituolida - Lituolidae
Textularia sp. Defrance 1824
Gymnolaemata - Cheilostomata - Calloporidae
Gymnolaemata - Cheilostomata - Hincksinidae
Gymnolaemata - Cheilostomata - Membraniporidae
Membranipora sp. Blainville 1834
Gastropoda - Turritellidae
Bivalvia - Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758
Bivalvia - Carditida - Carditidae
Hendy et al. 2008
Bivalvia - Cardiida - Veneridae
Bivalvia - Cardiida - Cardiidae
Cardium sp. Linnaeus 1758
Echinoidea - Cassiduloida - Cassidulidae
see common names

Geography
Country:Colombia
Coordinates: 11.9° North, 71.3° West (view map)
Paleocoordinates:11.5° North, 59.4° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period: Paleogene Epoch: Eocene
Stage: Priabonian 10 m.y. bin: Cenozoic 3
Key time interval: Late Eocene
Age range of interval: 37.71 - 33.9 m.y. ago
Stratigraphy
Formation:Macarao
Stratigraphic resolution:formation
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Macarao Fm, which unconformably overlies the Guaralamai Fm (Campanian) and is unconformably overlain by the Sillamana Fm (Oligocene). AGE: Late Eocene, on the basis of only poor macrofossil biostratigraphy. STRATIGRAPHIC POSITION: From transition zone between middle 140 m thick sandstone member and upper 80 m thick limestone member.
Lithology and environment
Primary lithology: lithified argillaceous,calcareous sandstone
Includes fossils?Y
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Dark colored, sandy limy and argillaceous facies. LITHIFICATION:
Environment:marine indet.
Taphonomy
Modes of preservation:body,replaced with calcite
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:Thomas
Collection method comments: COLLECTOR. D. Thomas, c. 1970. REPOSITORY: Not stated in text. Non-type specimens observed in USNM stratigraphic collections by A. Hendy (1/2011).
Taxonomic list comments:COVERAGE: Exhaustive list for macrofossils. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature. Nomenclature never published. New species have been re-identified by enterer (A. Hendy, 2/2011).
Metadata
Database number:103544
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2011-01-29 12:29:41 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2012-01-29 12:29:41
Creative Commons license:CC0
Reference information

Primary reference:
34945. D. J. Thomas. 1972. The Tertiary geology and systematic paleontology (phylum Mollusca) of the Guajira Peninsula, Colombia, South America. PhD dissertation. State University of New York at Binghampton 1-138 [A. Hendy/A. Hendy]

Secondary references:

19909 A. J. W. Hendy, D. P. Buick, K. V. Bulinski, C. A. Ferguson, and A. I. Miller. 2008. Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions. [A. Hendy/A. Hendy/A. Hendy]