J40/f170 - Kokoamu Bluff [Kokoamu Greensand] (Oligocene of New Zealand)

Where: New Zealand (44.9° S, 170.7° E: paleocoordinates 51.1° S, 174.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Kokoamu Greensand Formation, Duntroonian (27.3 - 25.2 Ma)

Environment/lithology: marine; lithified, bioturbated, gray, green, calcareous sandstone and lithified, brown, yellow limestone

• Here the Kokoamu Greensand is c. 2 m thick. As at Earthquakes, it disconformably overlies the light grey Earthquakes Marl on an erosion surface having up to 100 mm of relief (Lewis & Bellis 1984, p. 263). The Kokoamu is a greenish grey fine to medium-grained sandstone having nearly 50% glauconite grains. The underlying Earthquakes Marl is intensely bioturbated and exhibits both vertical and horizontal burrows up to 30 mm in diameter and up to 200 mm long. The brachiopod-rich interval is in the upper 0.5 m of the Kokoamu

•(Fig. 2). Above the fossil horizon the Kokoamu becomes more calcareous and grades upwards into the yellowish brown Otekaike Limestone.

Size classes: macrofossils, mesofossils

Collection methods: sieve,

Primary reference: D. MacKinnon, S. S. Beus, and D.L. Lee. 1993. Brachiopod fauna of the Kokoamu Greensand (Oligocene), New Zealand. New Zealand Journal of Geology and Geophysics 36:327-347 [M. Clapham/M. Manojlovic]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152356: authorized by Matthew Clapham, entered by Marko Manojlovic on 18.11.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Rhynchonellida - Notosariidae
Tegulorhynchia squamosa
 Rhynchonellida - Basiliolidae
Aetheia gualteri
Aetheia gualteri Morris 1850
 Terebratulida - Terebratulidae
Acrobrochus landonensis
 Terebratulida - Cancellothyrididae
Terebratulina suessi, Murravia catinuliformis
 Terebratulida - Terebratellidae
Rhizothyris kokoamuensis, "Stethothyris tapirina" = Aliquantula tapirina, Waiparia elliptica
Rhizothyris kokoamuensis Bowen and Campbell 1973
"Stethothyris tapirina" = Aliquantula tapirina Hutton 1873
Waiparia elliptica Thomson 1918
 Terebratulida - Dallinidae
Landonella laqueiformis
Landonella laqueiformis MacKinnon 1993