F-1 (900-1000 ft), Eniwetok Atol: Middle Miocene, Marshall Islands
collected by ONR and USGS 1952

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Heterostropha - Architectonicidae
Architectonica (Pseudotorinia) corwini
Ladd 1972
original and current combination Pseudotorinia
Gastropoda - Neritidae
Nerita (Amphinerita) aff. polita (Linnaeus 1758)
recombined as Nerita (Linnerita) polita
Gastropoda - Cerithiidae
Rhinoclavis (Pseudovertagus) eniwetokensis
Ladd 1972
spelled with current rank as Clava (Pseudovertagus)
Rhinoclavis (Pseudovertagus) floraensis
Ladd 1972
spelled with current rank as Clava (Pseudovertagus)
Bittium (Bittium) eniwetokensis
Ladd 1972
Gastropoda - Neogastropoda - Marginellidae
Volvarina cf. avena (Kiener 1834)
Ladd 1982
Gastropoda - Neogastropoda - Fasciolariidae
Peristernia eniwetokensis
Ladd 1977
Gastropoda - Neogastropoda - Columbellidae
Columbella pardalina
Ladd 1977
Gastropoda - Neogastropoda - Costellariidae
Vexillum (Costellaria) festum
Ladd 1977
Gastropoda - Iravadiidae
Iravadia gardnerae
Gastropoda - Caecidae
Caecum berberense
Ladd 1972
Gastropoda - Rissoidae
Merelina (Merelina) pisinna
Zebina (Morchiella) killeblebana
Rissoina (Schwartziella) aff. indrai
Rissoina (Rissolina) plicata
Gastropoda - Littorinidae
Tectarius (Subdilotectarius) rehderi Ladd 1966
Gastropoda - Hipponicidae
Hipponix (Pilosabia) revellei
Ladd 1972
Gastropoda - Turbinidae
Leptothyra emenana
synonym of Collonista
Gastropoda - Cycloneritida - Neritopsidae
Neritopsis (Neritopsis) radula (Linnaeus 1758)
recombined as Neritopsis radula
see common names

Geography
Country:Marshall Islands
Coordinates: 11.7° North, 162.2° East (view map)
Paleocoordinates:7.3° North, 172.3° East
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5
Key time interval:Middle Miocene
Age range of interval:15.98000 - 11.63000 m.y. ago
Stratigraphy
Local section:F-1 Local bed:950 ft
Local order:top to bottom
Regional section:Eniwetok Atol Regional bed:950 ft
Regional order:top to bottom
Stratigraphic resolution:group of beds
Stratigraphy comments: 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.
Lithology and environment
Primary lithology: unlithified "carbonate"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Not stated, but presumably carbonate facies. LITHIFICATION: Unlithified, on the basis facies description and figured specimens.
Environment:reef, buildup or bioherm
Geology comments: ENVIRONMENT: Carbonate facies. Shallow water, assumed to be reefal. No paleoenvironmental data presented.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:core,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:UNSM
Collectors:ONR and USGS Collection dates:1952
Collection method comments: COLLECTOR: Office of Naval Research and USGS, 1952. REPOSITORY: USNM.
Taxonomic list comments:COEVERAGE: Representative, but not exhaustive for gastropoda. NOMENCLATURE: An authoritative publication with relatively modern nomenclature, subgenus- and species-level identifications. IDENTIFIER: H. S. Ladd.
Metadata
Database number:77987
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2008-01-24 15:53:25 Last modified:2013-11-25 13:37:23
Access level:authorizer only Released:2009-01-24 15:53:25
Creative Commons license:CC BY
Reference information

Primary reference:
26223. 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]

Secondary references:

11409 H. S. Ladd. 1972. Cenozoic fossil mollusks from Western Pacific Islands; Gastropods (Turritellidae through Strombidae). United States Geological Survey Professional Paper 532:1-79 [A. Miller/A. Hendy/A. Hendy]
11410 H. S. Ladd. 1977. Cenozoic fossil mollusks from Western Pacific Islands; Gastropods (Eratoidae through Harpidae). United States Geological Survey Professional Paper 533:1-84 [A. Miller/A. Hendy/J. Millet]
26328 H. S. Ladd. 1982. Cenozoic fossil mollusks from Western Pacific Islands; Gastropods (Volutidae through Terebridae). United States Geological Survey Professional Paper 1171:1-100 [A. Hendy/A. Hendy]