Naseby GS 494 (Oligocene of New Zealand)

Also known as NZGS coll. 494

Where: Central Otago, New Zealand (45.0° S, 170.3° E: paleocoordinates 51.2° S, 175.3° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Naseby Greensand Formation (Stranraer Group), Late/Upper Oligocene (28.4 - 23.0 Ma)

• Originally listed as "Hutchinson's Quarry beds". Described in text as from units of the Naseby Series (now Naseby Greensand), part of the Pareora Formation of Hutton (1875). From Bishop (1979): Naseby Greensand (Stranraer Group) is approximatey 250-300 m thick, underlain by metamorphosed schist or siltstone of the Eocene Swinburn Formation (Stranraer Group), and overlain conformably by current-bedded quartz sands and gravels of the late Oligocene/early Miocene Wedderburn Formation (Stranraer Group).

•Bishop, D.G. 1979: Sheet 135, Ranfurly (1st ed.) "Geological Map of New Zealand 1:63 360". N.Z. Dept. Sci. Ind. Res., Wellington

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, coarse-grained, green sandstone

• From Bishop (1979) "....part of marine-terrestrial transgressive-regressive sequence of the Stranraer Group in the Maniototo basin"; "marine wedge thins rapidly westward,"
• No lithologic description given in text. From Bishop (1975): The greensand is a coarse and quartzose, with common bands, nodules and patches of limnoite,, and with thin lensoid beds of angular quartz pebbles.....Macrofossils are numerous.

Size class: macrofossils

Collection methods: quarrying,

• Collected by McKay, 1883.

Primary reference: J. H. Williamson. 1939. The Geology of the Naseby Subdivision, Central Otago. New Zealand Geological Survey Bulletin 39 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 35117: authorized by Austin Hendy, entered by Austin Hendy on 12.11.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative collection of mollusca; other groups not mentioned but may exist.
Bivalvia
 Arcida - Glycymerididae
Glycymeris aff. robusta clam
Listed as "Glycymeris n. sp. aff. robusta"
 Pectinida - Pectinoidae
Lentipecten hochstetteri Zittel 1864 scallop
 Pholadida - Corbulidae
Notocorbula humerosa Hutton 1885 clam
Gastropoda
 Neogastropoda -
"Baryspira sp. n. sp." = Amalda (Baryspira)
"Baryspira sp. n. sp." = Amalda (Baryspira) Fischer 1883 snail
Listed as "Baryspira n. sp. (acute spire)"
 Calyptraeoidea - Calyptraeidae
Maoricrypta wilckensi slipper shell