F-1 (800-900 ft), Eniwetok Atol (Miocene of Marshall Islands)

Where: Marshall Islands (11.7° N, 162.2° E: paleocoordinates 8.8° N, 168.4° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Late/Upper Miocene (11.6 - 5.3 Ma)

• STRATIGRAPHIC RELATIONS: From an undifferentiated lithostratigraphic unit. AGE: Late Miocene, on the basis of foraminiferal biostratigraphy. STRATIGRAPHIC POSITION: A composite from several beds within the section of drill core of 800-900 ft.

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; unlithified carbonate

• ENVIRONMENT: Carbonate facies. Shallow water, assumed to be reefal. No paleoenvironmental data presented.
• SPECIFIC LITHOLOGY: Not stated, but presumably carbonate facies. LITHIFICATION: Unlithified, on the basis facies description and figured specimens.

Size class: macrofossils

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. 1966. Chitons and Gastropods (Haliotidae through Adeorbidae) from Western Pacific Islands. United States Geological Survey Professional Paper 531:1-98 [A. Hendy/A. Hendy/J. Millet]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 77986: authorized by Austin Hendy, entered by Austin Hendy on 24.01.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COEVERAGE: Representative, but not exhaustive for gastropoda. NOMENCLATURE: An authoritative publication with relatively modern nomenclature, subgenus- and species-level identifications. IDENTIFIER: H. S. Ladd.
 Neogastropoda - Columbellidae
 Neogastropoda - Nassariidae
 Neogastropoda - Melongenidae
 Neogastropoda - Costellariidae
 Neogastropoda - Turridae
 Neogastropoda - Conidae
Conus eburneus3 Bruguière 1792 cone shell
 Neogastropoda - Terebridae
"Terebra (Oxymeris) "sp. B"" = Subula (Oxymeris)3
"Terebra (Oxymeris) "sp. B"" = Subula (Oxymeris)3 Dall 1903 auger snail
 Vanikoroidea - Hipponicidae
Hipponix (Pilosabia) revellei1, "Capulus (Krebsia) "sp. B"" = Krebsia1
"Capulus (Krebsia) "sp. B"" = Krebsia1 Mörch 1877 hoof shell
 Vermetoidea - Vermetidae
 Rissooidea - Rissoidae
 Truncatelloidea - Iravadiidae
 Sorbeoconcha - Plesiotrochidae
 Sorbeoconcha - Diastomatidae
 Sorbeoconcha - Cerithiidae
Rhinoclavis (Rhinoclavis) aspera1 Linnaeus 1758 cerith snail
Rhinoclavis (Rhinoclavis) sinensis1 Gmelin 1791 cerith snail
"Rhinoclavis (Pseudovertagus) eniwetokensis" = Clava (Pseudovertagus)1 cerith snail
"Rhinoclavis (Pseudovertagus) lowae" = Clava (Pseudovertagus)1 cerith snail
 Neritoidea - Neritidae
"Nerita (Amphinerita) aff. polita" = Nerita (Linnerita) polita Linnaeus 1758 snail
 Turbinoidea - Turbinidae
"Leptothyra emenana" = Collonista, "Astraea (Astralium) "sp. A"" = Astralium
"Leptothyra emenana" = Collonista snail
"Astraea (Astralium) "sp. A"" = Astralium Link 1807 snail
 Turbinoidea - Phasianellidae
Phasianella sp. Lamarck 1804 snail