M-8, Cerro Buque [Pisco Fm] (Miocene of Peru)

Where: Peru (14.6° S, 75.7° W: paleocoordinates 15.2° S, 72.4° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Pisco Formation, Middle Miocene (16.0 - 11.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Pisco Fm, which regionally, unconformably overlies the Chilcatay Fm (late Oligocene-early Middle Miocene). AGE: early Middle Miocene to Late Pliocene on the basis of K/Ar dates, siliceous microfossil zonation, and molluscan biostratigraphy supports. Stated in text to be of Middle Miocene age. STRATIGRAPHIC POSITION: From top of section.

• bed-level stratigraphic resolution

Environment/lithology: coastal; carbonaceous sandstone

• ENVIRONMENT: Not discussed in text, but appears to be from relatively shallow marine siliciclastic setting.
• SPECIFIC LITHOLOGY: ?Carbonaceous sandstone. LITHIFICATION: Not stated in text.

Size class: macrofossils

Collection methods: COLLECTOR: Not stated in text. REPOSITORY: Unknown.

Primary reference: A. Alván, J. Apolín, and C. Chacaltana. 2004. Los dientes de Seláceos (Condrichthyies) y su aplicaión estratigráfica en Las Lomas de Ullujaya (Ica, Perú). XIII Congreso Peruano de Geología. Resúmenes Extendidos 595-598 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 113246: authorized by Austin Hendy, entered by Austin Hendy on 24.07.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Focused on chondrichthyans, but including bivalves and gastropods. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature, and species-resolution taxonomic assignments.
 Odontaspidida - Carcharodontidae
"Isurus hastalis" = Cosmopolitodus hastalis
"Isurus hastalis" = Cosmopolitodus hastalis Agassiz 1843 elasmobranch
 Lamniformes - Otodontidae
"Carcharocles megalodon" = Otodus megalodon
"Carcharocles megalodon" = Otodus megalodon Agassiz 1843 megalodon