F-1 (200-300 ft), Eniwetok Atol (Pleistocene of Marshall Islands)

Where: Marshall Islands (11.7° N, 162.2° E: paleocoordinates 11.0° N, 163.8° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Early/Lower Pleistocene (2.6 - 0.8 Ma)

• STRATIGRAPHIC RELATIONS: From an undifferentiated lithostratigraphic unit. AGE: Early Pleistocene, on the basis of stratigraphic position. STRATIGRAPHIC POSITION: A composite from several beds within the section of drill core of 200-300 ft.

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; poorly lithified, shelly/skeletal, yellow limestone

• ENVIRONMENT: Carbonate facies. Shallow water, assumed to be reefal. No paleoenvironmental data presented.
• SPECIFIC LITHOLOGY: Coral-head limestone, fragments of colonies, yellow calcite. LITHIFICATION: Poorly-lithified on the basis of facies description and figured specimens.

Size class: macrofossils

Preservation: mold/impression, replaced with calcite

Collected by ONR and USGS in 1952; reposited in the UNSM

Collection methods: core,

• COLLECTOR: Office of Naval Research and USGS, 1952. REPOSITORY: USNM.

Primary reference: H. S. Ladd and S.O. Schlanger. 1960. Drilling operations on Eniwetok Atoll. United States Geological Survey Professional Paper 260(Y):863-903 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 43333: authorized by Austin Hendy, entered by Austin Hendy on 12.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• COEVERAGE: Representative, but not exhaustive of bivalvia and gastropoda. NOMENCLATURE: Mixture of some slightly antiquated and broad identifications and more modern nomenclature, subgenus- and species-level identifications from an authoritative publication. IDENTIFIER: H. S. Ladd.
Show authors, comments, and common names
Gastropoda
 Trochoidea - Skeneidae
Munditiella qualum1
 Sorbeoconcha - Caecidae
Caecum vertebrale2, Fartulum "sp. A"2
Fartulum "sp. A"2 Carpenter 1857 snail
Bivalvia
 Mytilida - Mytilidae
Mytilus sp.
Mytilus sp. Linnaeus 1758 mussel
 Arcida - Arcidae
Arcidae indet.
Arcidae indet. Lamarck 1809 clam
Listed as "arcids"
 Cardiida - Cardiidae
Cardium sp.
Cardium sp. Linnaeus 1758 cockle
Anthozoa
 Scleractinia - Poritidae
Porites sp.
Porites sp. Link 1807 stony coral
Ulvophyceae
 Bryopsidales - Halimedaceae
Halimeda sp.
Halimeda sp. Lamouroux 1812
1Ladd 1966; 2Ladd 1972