K-1 & K-1B (200-300 ft), Eniwetok Atol (Pleistocene of Marshall Islands)

Where: Marshall Islands (11.7° N, 162.3° 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 list from several beds within this section of drill core, from 200-300 ft.

• group of beds-level stratigraphic resolution

Environment/lithology: poorly lithified, shelly/skeletal, yellow limestone

• ENVIRONMENT: Carbonate facies. Shallow water. No paleoenvironmental data presented.
• SPECIFIC LITHOLOGY: Assemblage of mollusca, with some coral and forams, shells partly filled with yellow calcite. LITHIFICATION: Poorly-lithified, based on figured specimens and facies description.

Size class: macrofossils

Preservation: recrystallized

Collected by ONR and USGS in 1951; reposited in the UNSM

Collection methods: core,

• COLLECTOR: Office of Naval Research and USGS, 1951. 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 43324: 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.
Ulvophyceae
 Bryopsidales - Halimedaceae
Halimeda sp. Lamouroux 1812
Gastropoda
 Cerithioidea - Cerithiidae
Cerithiidae indet. Fleming 1822 cerith snail
Listed as "cerithids"
Cerithium (Thericium) tenellum1 Sowerby 1855 cerith snail
 Cerithioidea - Diastomatidae
 Sorbeoconcha - Plesiotrochidae
 Sorbeoconcha - Naticidae
Naticidae indet., "Polinices (Polinices) mammilla" = Natica (Natica) mamilla2
Naticidae indet. Guilding 1834 moon snail
Listed as "naticids"
"Polinices (Polinices) mammilla" = Natica (Natica) mamilla2 Linnaeus 1758 moon snail
 Sorbeoconcha - Rissoidae
Rissoidae indet. Gray 1847 snail
Listed as "rissoids"
 Sorbeoconcha - Triphoridae
Bivalvia
 Arcida - Arcidae
Arcidae indet. Lamarck 1809 clam
Listed as "arcids"
 Cardiida - Cardiidae
Cardium sp. Linnaeus 1758 cockle
 Cardiida - Tellinidae
Tellinidae indet. Blainville 1814 tellin clam
Listed as "tellinids"