O32/f8502 [Okarahia Sandstone] (Cretaceous of New Zealand)

Also known as S56/f502; GS6158

Where: New Zealand (42.6° S, 173.5° E: paleocoordinates 64.7° S, 144.1° W)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

When: Okarahia Sandstone Formation, Piripauan (85.8 - 83.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Okarahia Sandstone, which unconformably overlies Torlesse Supergroup, and is conformably overlain by the Tarapuhi Grit. AGE: Piripauan (=Coniacian-Santonian), on the basis of macrofossil biostratigraphy. STRATIGRAPHIC POSITION: 15 m - 30 m below base Amuri Limestone.

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified, carbonaceous siltstone

• ENVIRONMENT: Marine deposition under moderate energy conditions, probably not far from shore and at medium to shallow depths.
• SPECIFIC LITHOLOGY: Carbonaceous siltstone. LITHIFICATION: Unlithified, based on facies description (FRED).

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Schofield & Wood in 1951; reposited in the IGNS

Collection methods: surface (float),

• COLLECTOR: J.C. Schofield, B.L. Wood, 1951. REPOSITORY: GSNZ (now GNS Science, Lower Hutt, New Zealand).

Primary reference: G. Warren and I. Speden. 1977. The Piripauan and Haumurian stratotypes (Mata Series, Upper Cretaceous) and correlative sequences in the Haumuri Bluff District, South Marlborough. New Zealand Geological Survey Bulletin 92:1-60 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 83518: authorized by Austin Hendy, entered by Austin Hendy on 21.08.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalvia, gastropoda, cephalopoda, and other invertebrate and vertebrate groups. NOMENCLATURE: Not an authoritative publication, but with relatively modern nomenclature and species-resolution identifications.
Bivalvia
 Carditida - Astartidae
 Myalinida - Inoceramidae
? Inoceramus pacificus Anderson and Hanna 1935 clam
Gastropoda
 Sorbeoconcha - Littorinidae
 Neogastropoda - Tudiclidae
Cephalopoda
 Belemnitida - Dimitobelidae
Scaphopoda
 Dentaliida - Dentaliidae
Polychaeta
 Sabellida - Serpulidae