2B (1500-1600 ft), Bikini Island: Early/Lower Miocene, Marshall Islands
collected by JTF 1947

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Angiospermae - Magnoliales - Myristicaceae
Virola cancellata
Ladd 1972
Gastropoda - Turritellidae
Vermicularia informal sp. A Lamarck 1799
Ladd 1972
Gastropoda - Dialidae
Diala stricta
Ladd 1972
Gastropoda - Rissoidae
Rissoina (Schwartziella) aff. flexuosa
Rissoina (Rissolina) harti
Gastropoda - Neritidae
Smaragdia (Smaragdia) informal sp. A Issel 1869
see common names

Geography
Country:Marshall Islands
Coordinates: 11.6° North, 165.4° East (view map)
Paleocoordinates:6.1° North, 179.0° 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:Early/Lower Miocene
Age range of interval:23.03000 - 15.97000 m.y. ago
Stratigraphy
Local section:2B Local bed:1550 ft
Local order:top to bottom
Regional section:Bikini Island Regional bed:1550 ft
Regional order:top to bottom
Stratigraphic resolution:group of beds
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From an undifferentiated lithostratigraphic unit. AGE: Early Miocene, on the basis of foraminiferal biostratigraphy. STRATIGRAPHIC POSITION: A composite from several beds within the section of drill core of 1500-1600 ft.
Lithology and environment
Primary lithology: poorly lithified not reported
Includes fossils?Y
Lithology description: LITHOLOGY: Unknown, probably carbonate. LITHIFICATION: Poorly-lithified, on the basis of figured specimens.
Environment:carbonate indet.
Geology comments: EMVIRONMENT: Not stated, but shallow marine carbonate facies.
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:USNM
Collectors:JTF Collection dates:1947
Collection method comments: COLLECTOR: Operation Crossroads, Joint Task Force One, 1947. 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:78029
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2008-01-25 07:26:09 Last modified:2013-11-25 13:37:23
Access level:authorizer only Released:2009-01-25 07:26:09
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]