Otekaike Limestone (Powell collection) - Otiake: Late/Upper Oligocene, New Zealand

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Neogastropoda - Buccinidae
Buccinulum (Evarnula) rigidum
Gastropoda - Neogastropoda - Horaiclavidae
Mauidrillia inaequalis
Gastropoda - Neogastropoda - Turridae
Maoritomella annosa
spelled with current rank as Tomopleura (Maoritomella)
Gastropoda - Neogastropoda - Mitromorphidae
Mitrithara waitakiensis
synonym of Mitromorpha
Gastropoda - Neogastropoda - Conidae
Marshallaria waitakiensis
Gastropoda - Neogastropoda - Raphitomidae
Austrotoma finlayi
Gastropoda - Neogastropoda - Mangeliidae
Neoguraleus (Fusiguraleus) nutans
see common names

Geography
Country:New Zealand County:Waitaki
Coordinates: 44.8° South, 170.5° East (view map)
Paleocoordinates:51.0° South, 175.0° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Oligocene
Stage:Chattian 10 m.y. bin:Cenozoic 4
Key time interval:Late/Upper Oligocene
Age range of interval:27.82000 - 23.03000 m.y. ago
Stratigraphy
Geological group:Otiake Formation:Otekaike Limestone
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Otekaike Limestone, which is the upper unit of the Otiake Group, overlying the Kokoamu Greensand, and is overlain by the Gee Greensand of the Kaierero Group. AGE: Duntroonian-Waitakian in text of Gage (1957), but largely Waitakian in Table 3; Waitakian = Late Chattian-early Aquitanian; hereby assigned a Late Oligocene age in ensure collection is not orphaned. STRATIGRAPHIC POSITION: Unknown position within formation.
Lithology and environment
Primary lithology: lithified calcareous "limestone"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Limestone, highly calcareous. LITHIFICATION: Lithified, largely assumed, as no indication is given text of lithification state, although text says unit is cliff forming and highly calcareous, and limestone.
Environment:open shallow subtidal
Geology comments: ENVIRONMENT: Shallow marine, carbonate.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:biostratigraphic analysis
Museum repositories:IGNS
Collection method comments: COLLECTOR: Collected and identified by A. W. B. Powell. REPOSITORY: New Zealand Geological Survey (now GNS Science, Lower Hutt, New Zealand).
Taxonomic list comments:COVERAGE: Exhaustive for bivalvia, gastropoda, and scaphopods. NOMENCLATURE: Somewhat antiquated but identified by specialist and often to subgeneric and species resolution.
Metadata
Also known as:Coll# 3075 (Hendy PhD)
Database number:67861
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2006-12-13 21:22:30 Last modified:2017-05-23 16:34:15
Access level:group members Released:2007-12-13 21:22:30
Creative Commons license:CC BY
Reference information

Primary reference:
18671. M. Gage. 1957. The Geology of the Waitaki Subdivision. New Zealand Geological Survey Bulletin 55 [A. Hendy/A. Hendy]

Secondary references:

18682 A.J.W. Hendy. 2006. The Neogene evolutionary history of New Zealand Mollusca: diversity trends, paleobiogeography, and evolutionary paleoecology. [A. Hendy/A. Hendy]