U.C. Location S. 7334 (Zone C) - Clark and Durham (1946) (Eocene of Colombia)

Also known as S. 7334

Where: Sucre, Colombia (9.5° N, 75.2° W: paleocoordinates 7.1° N, 68.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Late/Upper Eocene (37.2 - 33.9 Ma)

• No lithostratigraphic nomenclature for these collections. Deposits of late Eocene age, referred to as Zone C. Correlatable on the basis of faunas to the Saman Formation and Chira Shales of Peru (upper Eocene to Oligocene) and upper Jackson Formation of the Gulf Coast, USA (Bartonian). The Eocene in the Sucre region of Columbia reaches 4,500 ft in thickness, of which the collections span the upper portion of Anderson's (1928) unit F (600 ft), near the top of this succession.

• bed-level stratigraphic resolution

Environment/lithology: coastal; pebbly, conglomeratic sandstone and shelly/skeletal, calcareous sandstone

• Deposit probably formed close to shoreline, tropical.
• Fossils from three facies: conglomeratic gray sandstone with pebbles up to a quarter inch in diameter; dark-gray, medium-fine bituminous-stained sandstone; fine calcareous shelly sandstone/coquina.

Size class: macrofossils

Reposited in the CAS, UCMP

Collection methods: quarrying,

• Collected by the Standard Oil Company of California. Held in repositories at both CAS and UCMP.

Primary reference: B. L. Clark and J. W. Durham. 1946. Eocene Faunas from the Department of Bolivar, Colombia. Geological Society of America Memoir 16:1-126 [M. Patzkowsky/K. Layou/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 42841: authorized by Austin Hendy, entered by Austin Hendy on 05.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for mollusca (identified by B.L. Clark).
Gastropoda
 Architaenioglossa - Ampullinidae
Ampullella cedroensis Clark and Durham 1946 snail
 Sorbeoconcha - Thersiteidae
Strombus (? Oostrombus) cedroensis Clark and Durham 1946 snail
 Neogastropoda - Volutidae
Pavora olssoni Clark and Durham 1946 volute
 Sorbeoconcha - Cassidae
Ceiba ceibaensis Clark and Durham 1946 snail
 Sorbeoconcha - Naticidae
Neverita (Glossaulax) bolivarensis Clark and Durham 1946 moon snail
Bivalvia
 Pectinida - Pectinoidae
Spondylus olssoni Clark and Durham 1946 scallop
 Cardiida - Veneridae
Pitar (Pitarella) colombiana Clark and Durham 1946 venus
Pitar cedroensis Clark and Durham 1946 venus clam
 Cardiida - Anatinellidae
"Labiosa (Raeta) sp." = Raeta
"Labiosa (Raeta) sp." = Raeta Gray 1853 clam
 Cardiida - Cardiidae
 Cardiida - Solecurtidae
Tagelus bolivarensis Clark and Durham 1946 clam
 Cardiida - Semelidae
Semele bolivarensis Clark and Durham 1946 clam
 Carditida - Carditidae