Trig Z ( of New Zealand)

Also known as I40/f30

Where: North Otago, New Zealand (44.8° S, 170.5° E: paleocoordinates 50.6° S, 176.3° W)

• coordinate stated in text

When: Miller Member (Otekaike Limestone Formation), Waitakian (25.2 - 21.7 Ma)

• Graham et al. [24] gave strontium dates for the Trig Z sequence (derived from analysis of foraminifera and macrofossils, mainly pectinids), including 23.6 to 24.2 Ma for the upper part of the Miller Member (I40/f305; 87Sr/86Sr values include 0.708263+/2 0.000011), and 23.3 to 23.9 Ma for the base of the G. woodi zone (I40/f304; 87Sr/86Sr =0.708258+/20.000011). The age for Otekaikea marplesi is taken here as $23.9 Ma.

•The type- locality lies at or near the right side of Gage’s ([22]: Fig. 25) photograph of the type locality of the Waitakian Stage. The locality has been prospected, but no other significant material of O. marplesi has been found.

•Was given as Chattian.

Environment/lithology: marine; brown, yellow, calcareous siltstone

• yellow or brown calcareous silt with shellbeds and large low-angle cross- beds

Size class: macrofossils

Preservation: original phosphate

Primary reference: M. R. Dickson. 1964. The skull and other remains of Prosqualodon marplesi, a new species of fossil whale. New Zealand Journa of Geology and Geophysics 7:626-635 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45664: authorized by Mark Uhen, entered by Mark Uhen on 21.11.2004, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

 Globigerinaceae - Globigerinidae
Bivalvia
 Cardiida - Veneridae
Proxichione otiakensis n. sp.2 Maxwell 1978 venus clam
Gastropoda
 Velutinoidea - Triviidae
Proterato neozelanica1 Murdoch 1924 snail
Mammalia
 Cetacea - Waipatiidae
"Prosqualodon marplesi n. sp." = Otekaikea marplesi
"Prosqualodon marplesi n. sp." = Otekaikea marplesi Dickson 1964 toothed whale