Kiritehere coast N82/f754 (Triassic of New Zealand)

Where: North Island, New Zealand (38.3° S, 174.7° E: paleocoordinates 71.2° S, 86.2° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Late/Upper Triassic (237.0 - 201.3 Ma)

• Kiritehere Beach and coastal section, which includes the longest continuous exposure of Monotis-bearing strata known in New Zealand, with this taxon occupying a basal position in the sequence.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; sandstone

• Collections are from rich shellbeds in which isolated valves are closely packed in a fine sand matrix and are somewhat flattened by compaction and distorted to varying degrees by mutual interference; Awakino specimens are better preserved, less closely packed and generally fully decalcified.

Size class: macrofossils

Collection methods: Overall, amongst the 60-odd reasonably complete valves examined, right outnumbered left about 3:2 and about half the total are juveniles

Primary reference: J. A. Grant-Mackie. 1980. Systematics of New Zealand Monotis (Upper Triassic Bivalvia): subgenus Eomonotis. New Zealand Journal of Geology and Geophysics 23:639-663 [D. Bottjer/N. Bonuso/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41667: authorized by David Bottjer, entered by Nicole Bonuso on 19.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• subgenus = Eomonotis
Bivalvia
 Pectinida - Monotidae