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Recent Discoveries And A Review Of The Ordovician Faunas Of New Zealand, Ian Percival, Roger Cooper, Yong Yi Zhen, J Simes, Anthony Wright
Recent Discoveries And A Review Of The Ordovician Faunas Of New Zealand, Ian Percival, Roger Cooper, Yong Yi Zhen, J Simes, Anthony Wright
Anthony Wright
Fossiliferous Ordovician rocks are of limited extent in New Zealand, being largely restricted to northwest Nelson and Westland in the northern part of the South Island, with some isolated exposures at the southern extremity of Fiordland (Fig. 1). The known stratigraphic record, though incomplete, covers much of the period, and new information from study and revision of old collections (mostly dating from the 1960s and 1970s) continues to fill in the gaps. These data are critical to a better understanding of New Zealand’s place in the Ordovician world, when it occupied an isolated position facing the palaeo-Pacific Ocean offshore to …
Darriwilian (Middle Ordovician) Conodonts From Thompson Creek, Nelson Province, New Zealand, Yong Yi Zhen, Ian G. Percival, Roger A. Cooper, John E. Simes, Anthony J. Wright
Darriwilian (Middle Ordovician) Conodonts From Thompson Creek, Nelson Province, New Zealand, Yong Yi Zhen, Ian G. Percival, Roger A. Cooper, John E. Simes, Anthony J. Wright
Anthony Wright
A well preserved Middle Ordovician conodont fauna of 24 species has been recovered from seven samples of a small limestone lens exposed in Thompson Creek, northwest of Nelson, on the South Island of New Zealand. The presence of Histiodella holodentata, Baltoniodus? sp., Paroistodus originalis, P. horridus, Periodon macrodentatus, Protopanderodus sp. cf. P. varicostatus, Costiconus ethingtoni and Venoistodus balticus in the fauna indicates a Darriwilian (late Da2 to mid Da3) age. The occurrence of Ansella jemtlandica, Baltoniodus? sp., Periodon macrodentatus, Spinodus sp., Spinodus? sp. and Histiodella holodentata suggests a relatively deeper water (outer shelf to slope) setting, comparable with contemporaneous faunas, …