2A (0-100 ft), Bikini Island: Holocene, Marshall Islands
collected by JTF 1947

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Eucyclidae
Turcica (Perrinia) morrisoni Ladd 1966
Gastropoda - Lepetellida - Fissurellidae
Hemitoma (Montfortia) bikiniensis Ladd 1966
Gastropoda - Trochidae
Isanda (Parminolia) apicina (Gould 1862)
Gastropoda - Skeneidae
? Leucorhynchia lilli
Ladd 1972
Gastropoda - Cerithiidae
Clypeomorus verbeeki
Ladd 1972
Colina (Ischnocerithium) rostrata
Ladd 1972
Gastropoda - Triphoridae
Triphora (Inforis) ofuensis
Ladd 1972
Triphora (Mastonia) clavata
Ladd 1972
Triphora (Inella) pyramidalis
Ladd 1972
original and current combination Inella
Gastropoda - Rissoidae
Rissoina (Rissoina) ambigua
Ladd 1972
Rissoina (Phosinella) balteana
Gastropoda - Neogastropoda - Columbellidae
Lavesopus eniwetokensis
Ladd 1977
see common names

Geography
Country:Marshall Islands
Coordinates: 11.6° North, 165.4° East (view map)
Paleocoordinates:11.6° North, 165.4° East
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Quaternary Epoch:Holocene
10 m.y. bin:Cenozoic 6
Key time interval:Holocene
Age range of interval:0.01170 - 0.00000 m.y. ago
Stratigraphy
Local section:2A Local bed:50 ft
Local order:top to bottom
Regional section:Bikini Island Regional bed:50 ft
Regional order:top to bottom
Stratigraphic resolution:group of beds
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From an undifferentiated lithostratigraphic unit. AGE: Holocene, on the basis of stratigraphic position. STRATIGRAPHIC POSITION: A composite from several beds within the section of drill core of 0-100 ft.
Lithology and environment
Primary lithology:white unlithified marl
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Debris, unconsolidated coarse, platy, poorly sorted, mixture of bioclastic elements. LITHIFICATION: Unlithified, on the basis of figured specimens.
Environment:lagoonal/restricted shallow subtidal
Geology comments: EMVIRONMENT: Fauna similar to that dredge in shallow water of Bikini Lagoon
Taphonomy
Modes of preservation:body,recrystallized,original aragonite,replaced with calcite
Size of fossils:macrofossils
Collection methods and comments
Collection methods:core,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:UNSM
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 of bivalvia and gastropoda. NOMENCLATURE: Mixture of some slightly antiquated and broad identifications and more modern nomenclature, subgenus- and species-level identifications from an authoritative publication. IDENTIFIER: H. S. Ladd.
Metadata
Database number:43337
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:J. Alroy Research group:marine invertebrate
Created:2004-08-12 04:03:38 Last modified:2013-11-25 13:37:23
Access level:authorizer only Released:2005-08-12 04:03:38
Creative Commons license:CC BY
Reference information

Primary reference:
11432. K. O. Emery, J. I. Tracey, and H.S. Ladd. 1954. Geology of Bikini and nearby atolls: Part 1, Geology. United States Geological Survey Professional Paper 260(A):1-265 [A. Miller/A. Hendy/R. McClees-Funinan]

Secondary references:

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]
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]