F-1 (900-1000 ft), Eniwetok Atol (Miocene of Marshall Islands)

Where: Marshall Islands (11.7° N, 162.2° E: paleocoordinates 7.3° N, 172.3° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Middle Miocene (16.0 - 11.6 Ma)

• STRATIGRAPHIC RELATIONS: From an undifferentiated lithostratigraphic unit. AGE: Middle Miocene, on the basis of foraminiferal biostratigraphy and stratigraphic position. STRATIGRAPHIC POSITION: A composite from several beds within the section of drill core of 900-1000 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 77987: 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.
Gastropoda
 Heterostropha - Architectonicidae
"Architectonica (Pseudotorinia) corwini" = Pseudotorinia1
"Architectonica (Pseudotorinia) corwini" = Pseudotorinia1 snail
 Neritoidea - Neritidae
"Nerita (Amphinerita) aff. polita" = Nerita (Linnerita) polita
"Nerita (Amphinerita) aff. polita" = Nerita (Linnerita) polita Linnaeus 1758 snail
 Cerithioidea - Cerithiidae
"Rhinoclavis (Pseudovertagus) eniwetokensis" = Clava (Pseudovertagus)1, "Rhinoclavis (Pseudovertagus) floraensis" = Clava (Pseudovertagus)1, Bittium (Bittium) eniwetokensis1
"Rhinoclavis (Pseudovertagus) eniwetokensis" = Clava (Pseudovertagus)1 cerith snail
"Rhinoclavis (Pseudovertagus) floraensis" = Clava (Pseudovertagus)1 cerith snail
 Neogastropoda - Marginellidae
Volvarina cf. avena3 Kiener 1834 margin shell
 Neogastropoda - Fasciolariidae
 Neogastropoda - Columbellidae
 Neogastropoda - Costellariidae
 Sorbeoconcha - Iravadiidae
 Sorbeoconcha - Caecidae
 Sorbeoconcha - Rissoidae
 Sorbeoconcha - Littorinidae
 Sorbeoconcha - Hipponicidae
 Trochoidea - Turbinidae
"Leptothyra emenana" = Collonista
"Leptothyra emenana" = Collonista snail
 Neritoina - Neritopsidae
"Neritopsis (Neritopsis) radula" = Neritopsis radula
"Neritopsis (Neritopsis) radula" = Neritopsis radula Linnaeus 1758 snail