Where: Guam (13.5° N, 144.8° E: paleocoordinates 13.4° N, 146.2° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Barrigada Limestone Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• STRATIGRAPHIC RELATIONS: From the Barrigada Limestone, which overlies the Bonya Limestone (Middle Miocene) and is overlain by the Alifan Limestone and Janum Formation. AGE: Late Miocene on the basis of foraminiferal biostratigraphy. STRATIGRAPHIC POSITION: From several beds within the Mariana Limestone.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Preservation: cast, mold/impression

Reposited in the USNM

Collection methods: surface (in situ),

• COLLECTORS: Unknown collectors. 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 77938: authorized by Austin Hendy, entered by Austin Hendy on 23.01.2008

Creative Commons license: CC BY (attribution)