Otiake Group

Geology

Formations: Kokoamu Greensand (7), Otekaike Limestone (20)

Lithologies: sandstone (7), "limestone" (20)

Paleoenvironments: marine indet. (2), open shallow subtidal (19), coastal indet. (6)

Age range: base of the Duntroonian to the top of the Late/Upper Oligocene or 27.30000 to 23.03000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Late/Upper Oligocene28.4 - 23.03New Zealand (67843 67844 67845 67846 67847 67848 67849 67850 67851 67852 67853 67854 67855 67856 67857 67859 67860 67861 67864)
Duntroonian27.3 - 25.2New Zealand (67919 67920 67921 67922 67923)
Duntroonian27.3 - 25.2New Zealand (South Island) (180850 230556)
Waitakian25.2 - 21.7New Zealand (179299)