Mariana Limestone equivalent, Saipan (Pliocene of Northern Mariana Islands)

Also known as USGS 21611

Where: Northern Mariana Islands (15.0° N, 145.6° E: paleocoordinates 15.0° N, 146.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Mariana Limestone Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• STRATIGRAPHIC RELATIONS: From the regional equivalent of the Mariana Limestone, which overlies Pliocene terrace deposits and is overlain by the Tanapag Limestone (Pleistocene). AGE: Early Pliocene on the basis of foraminiferal biostratigraphy. STRATIGRAPHIC POSITION: Composite list undifferentiated Mariana Limestone equivalent localities.

• formation-level stratigraphic resolution

Environment/lithology: lithified limestone

• ENVIRONMENT: Shallow carbonate facies.
• SPECIFIC LITHOLOGY: Limestone facies. LITHIFICATION: Lithified, on the basis of facies description.

Size class: macrofossils

Collected by Bridge in 1945; reposited in the USNM

Collection methods: surface (in situ),

• COLLECTORS: J. Bridge (1945). REPOSITORY: USNM (formely USGS collections).

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 77940: authorized by Austin Hendy, entered by Austin Hendy on 23.01.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Not quite exhaustive, but comprehensive for gastropods. Bivalves not covered in publications. NOMENCLATURE: Authoritative publication, with moderately modern nomenclature, with subgenus and species-resolution assignments.
Gastropoda
 Sorbeoconcha - Cypraeidae
"Cypraea (Monetaria) moneta" = Monetaria moneta
"Cypraea (Monetaria) moneta" = Monetaria moneta Linnaeus 1758 cowry
 Sorbeoconcha - Strombidae
"Strombus (Canarium) mutabilis" = Canarium mutabile
"Strombus (Canarium) mutabilis" = Canarium mutabile Swainson 1821 true conch
 Lepetellida - Haliotidae
 Ptenoglossa - Thaididae