Naseby GS 753 (Oligocene of New Zealand)

Also known as NZGS coll. 753

Where: Central Otago, New Zealand (45.0° S, 170.2° E: paleocoordinates 51.2° S, 175.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• Originally listed as "Greensands". 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: coastal; 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,"
• Listed as "greensands"; "fresh, rather coarse greensand". 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 J. Hector, 1890. Williamson (1939) does discuss possibility of some mixing in this collection, between either multiple horizons, or multiple locations

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 35118: 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.
 Arcida - Glycymerididae
Glycymeris aff. robusta clam
Listed as "Glycymeris n. sp. aff. robusta"; + fragments
 Arcida - Cucullaeidae
Cucullaea australis clam
 Arcida - Limopsidae
Limopsis aff. zitteli Ihering 1907 clam
 Pectinida - Pectinoidae
Lentipecten hochstetteri Zittel 1864 scallop
+ fragments
 Carditida - Crassatellidae
Spissatella cf. trailli Hutton 1873 clam
 Carditida - Carditidae
"Venericardia aff. ponderosa" = Megacardita ponderosa
"Venericardia aff. ponderosa" = Megacardita ponderosa Suter 1913 clam
+ fragments
 Pholadida - Corbulidae
Notocorbula humerosa Hutton 1885 clam
 Cardiida - Mactridae
Scalpomactra sp. n. sp. Finlay 1928 clam
 Cardiida - Cardiidae
"Cardium cf. waitakiense" = Hedecardium waitakiense
"Cardium cf. waitakiense" = Hedecardium waitakiense Suter 1917 cockle
 Hiatellida - Hiatellidae
Panopea worthingtoni Hutton 1873 clam
 Neogastropoda -
"Baryspira sp. n. sp." = Amalda (Baryspira), "Baryspira (Alocospira) hebera" = Amalda (Baryspira)
"Baryspira sp. n. sp." = Amalda (Baryspira) Fischer 1883 snail
Listed as "Baryspira n. sp. (acute spire)"
"Baryspira (Alocospira) hebera" = Amalda (Baryspira) snail
 Neogastropoda - Terebridae
Zeacuminia "n. sp. A" Finlay 1930 auger snail
Listed as "Zeacuminia n. sp. A"
 Cypraeoidea - Cypraeidae
Cypraea sp. Linnaeus 1758 cowry
 Dentaliida - Dentaliidae
Dentalium cf. solidum Hutton 1873 tusk shell