ammonites
N56/f517 - Ngaruawahia (Pukemiro Sandstone) (Oligocene of New Zealand)

Also known as GS 5091

Where: Waikato, New Zealand (37.7° S, 175.2° E: paleocoordinates 47.9° S, 179.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pukemiro Sandstone Formation (Te Kuiti Group), Oligocene (33.9 - 23.0 Ma)

• Overlies Waikato Coal Measures and is overlain by the Mangaotuku Siltstone. grades laterally into the Glen Afton Claystone. Whaingaroan-Duntroonian (Early to middle Oligocene) age.

• bed-level stratigraphic resolution

Environment/lithology: coastal; sandstone

• Shelfal waters, possibly accumulaing in a gulf/large embayment in aerobic conditions, siliciclastic.
• Sandstone.

Size class: macrofossils

Preservation: cast

Collection methods: quarrying,

• Collections are likely reposited at IGNS (incl. former NZGS collection)

Primary reference: D. Kear and J.C. Schofield. 1978. Geology of the Ngaruawahia Subdivision. New Zealand Geological Survey Bulletin 88 [J. Sepkoski/A. Hendy/A. Hendy] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 45012: authorized by Jack Sepkoski, entered by Austin Hendy on 27.09.2004