F-1 (800-900 ft), Eniwetok Atol: Late/Upper Miocene, Marshall Islands
collected by ONR and USGS 1952

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Phasianellidae
Phasianella sp. Lamarck 1804
Gastropoda - Turbinidae
Leptothyra emenana
synonym of Collonista
Astraea (Astralium) informal sp. A (Link 1807)
original and current combination Astralium
Gastropoda - Neritidae
Nerita (Amphinerita) aff. polita (Linnaeus 1758)
recombined as Nerita (Linnerita) polita
Smaragdia (Smaragdia) colei
Smaragdia (Smaragdia) jogjacartensis (Martin 1916)
Gastropoda - Cerithiidae
Rhinoclavis (Rhinoclavis) marshallensis
Ladd 1972
Rhinoclavis (Rhinoclavis) powelli
Ladd 1972
Rhinoclavis (Rhinoclavis) aspera (Linnaeus 1758)
Ladd 1972
Rhinoclavis (Pseudovertagus) eniwetokensis
Ladd 1972
spelled with current rank as Clava (Pseudovertagus)
Rhinoclavis (Pseudovertagus) lowae
Ladd 1972
spelled with current rank as Clava (Pseudovertagus)
Rhinoclavis (Rhinoclavis) sinensis Gmelin 1791
Ladd 1972
Gastropoda - Diastomatidae
Obtortio pyrrhacme
Ladd 1972
Gastropoda - Plesiotrochidae
Plesiotrochus marshallensis
Ladd 1972
Plesiotrochus whitmorei
Ladd 1972
Gastropoda - Hipponicidae
Capulus (Krebsia) informal sp. B (Mörch 1877)
Ladd 1972
original and current combination Krebsia
Hipponix (Pilosabia) revellei
Ladd 1972
Gastropoda - Rissoidae
Rissoina (Rissolina) plicata
Gastropoda - Iravadiidae
Iravadia gardnerae
Gastropoda - Neogastropoda - Columbellidae
Anachis (Zafra) smithi
Ladd 1977
Columbella pardalina
Ladd 1977
Gastropoda - Neogastropoda - Nassariidae
Nassarius (Niotha) marshallensis
Ladd 1977
Gastropoda - Neogastropoda - Melongenidae
Pugilina (Mayeria) swartzi
Ladd 1977
Gastropoda - Neogastropoda - Terebridae
Terebra (Oxymeris) informal sp. B (Dall 1903)
Ladd 1982
spelled with current rank as Subula (Oxymeris)
Gastropoda - Neogastropoda - Conidae
Conus eburneus Bruguière 1792
Ladd 1982
Gastropoda - Neogastropoda - Turridae
Lophiotoma (Lophiotoma) eniwetokensis
Ladd 1982
Gastropoda - Neogastropoda - Costellariidae
Vexillum (Costellaria) aff. gembacana
Ladd 1977
Vexillum (Costellaria) deshayesi Reeve 1844
Ladd 1977
Vexillum (Costellaria) festum
Ladd 1977
Gastropoda - Vermetidae
Serpulorbis cf. javanus
Ladd 1972
see common names

Geography
Country:Marshall Islands
Coordinates: 11.7° North, 162.2° East (view map)
Paleocoordinates:8.8° North, 168.4° East
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 6
Key time interval:Late/Upper Miocene
Age range of interval:11.63000 - 5.33300 m.y. ago
Stratigraphy
Local section:F-1 Local bed:850 ft
Local order:top to bottom
Regional section:Eniwetok Atol Regional bed:850 ft
Regional order:top to bottom
Stratigraphic resolution:group of beds
Stratigraphy comments: 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.
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:77986
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2008-01-24 15:52:15 Last modified:2013-11-25 13:37:23
Access level:authorizer only Released:2009-01-24 15:52:15
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]