Naseby GS 493 (Oligocene of New Zealand)

Also known as NZGS coll. 493

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 "Pareora 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: 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,"
• 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 35116: 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 - Cucullaeidae
 Arcida - Limopsidae
Limopsis aff. zitteli Ihering 1907 clam
 Pholadida - Corbulidae
Notocorbula humerosa Hutton 1885 clam
 Cardiida - Veneridae
Kuia aff. chariessa venus clam
Listed as "Kuia n. sp. aff. chariessa"; fragment
 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
"Baryspira (Alocospira) hebera" = Amalda (Baryspira) snail
 Neogastropoda - Buccinidae
"Cominula (Procominula) sp. n. sp." = Cominella (Cominula), Austrofusus aff. apudalpha
"Cominula (Procominula) sp. n. sp." = Cominella (Cominula) Finlay 1926 true whelk
Austrofusus aff. apudalpha true whelk
Listed as "Austrofusus n. sp. aff. apudalpha"
 Neogastropoda - Volutidae
Spinomelon sp. n. sp. Marwick 1926 volute
 Neogastropoda - Volutomitridae
 Neogastropoda - Turridae
 Neogastropoda - Raphitomidae
 Neogastropoda - Terebridae
 Naticoidea - Naticidae
 Calyptraeoidea - Calyptraeidae
Maoricrypta wilckensi slipper shell
Sigapatella sp. Lesson 1830 slipper shell
 Dentaliida - Dentaliidae
Dentalium sp. n. sp. Linnaeus 1758 tusk shell