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The first find of Eurycephalitinae (Jurassic Ammonitina) in New Zealand and its biogeographic implications

Published online by Cambridge University Press:  20 May 2016

Gerd E. G. Westermann  and
Neville Hudson
Gerd E. G. Westermann
Affiliation:
Department of Geology, McMaster University, Hamilton, Ontario L8S 4M1 Canada
Neville Hudson
Affiliation:
Department of Geology, University of Auckland, Private Bag, Auckland, New Zealand
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Extract

Uppermost temaikan strata from southwest Auckland Province, North Island, New Zealand, have recently yielded a small fauna of Middle Jurassic ammonites previously believed to be endemic to the eastern Pacific borderlands, although a single fragment of the new species described below was previously reported in a large Tethyan assemblage from Papua, New Guinea, by Westermann and Callomon (1988). The New Zealand assemblage consists of the dimorphic pair Xenocephalites (♂) and Lilloettia (♀) with close morphologic ties to species from the latest Bathonian Steinmanni Standard Zone of the Andean Province (Riccardi et al., 1989). This new find permits direct time-correlation of the uppermost part of the Temaikan Stage (Marwick, 1951, 1953) with the East-Pacific latest Bathonian Steinmanni Zone and with the East-Tethyan Late Bathonian Macrocephalites apertus Association. The upper Temaikan Stage of south Otago Province, southeastern South Island, New Zealand, has also yielded rare representatives of the Tethyan Macrocephalitinae, so that the New Zealand area in the late Middle Jurassic was in the overlap area of Tethyan and East-Pacific Subrealms.

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 65 , Issue 4 , July 1991 , pp. 689 - 693
Copyright
Copyright © The Paleontological Society 

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