New Zealand Journal of Geology and Geophysics abstracts

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First fossil occurrence of the austral bryozoan family Urceoliporidae

DENNIS P. GORDON

National Institute of Water & Atmospheric Research
P.O. Box 14-901, Kilbirnie
Wellington, New Zealand

Abstract  The cheilostome bryozoan family Urceoliporidae has not previously been discovered in the fossil record, hitherto comprising only three Recent species in two genera from Australia and New Zealand. Urceolipora miocenica n. sp. is described from the Pakaurangi Formation, Waitemata Group, from Pakaurangi Point, Kaipara Harbour, New Zealand. Thus, both families of the superfamily Urceoliporoidea (Urceoliporidae and Prostomariidae) are now known from the Early Miocene. The new species is made the type of a new subgenus, Cureolipora, chiefly distinguished from Urceolipora sensu stricto by the lack of a longitudinal ridge dividing the frontal shield into two sectors, and also by the lack of an orificial sinus and lateral-oral horns. More than 215 species of Bryozoa are now known to occur in the New Zealand Miocene, more than half of which are undescribed.

Keywords  Waitemata Group; Pakaurangi Formation; Kaipara Harbour; Otaian; Miocene; Bryozoa; Cheilostomata; Urceoliporidae; Urceolipora; new taxa; paleoenvironment

New Zealand Journal of Geology & Geophysics, 2000, Vol. 43: 385-389

0028-8306/00/4303-0385 $7.00/0 (c) The Royal Society of New Zealand 2000

PDF file of entire paper: medium quality (1126K); (scanned from paper original: notes about this process)

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