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A new runner-like cyclostome bryozoan from the Bromide Formation (Sandbian, Upper Ordovician) of Oklahoma and its phylogenetic affinities

Published online by Cambridge University Press:  26 July 2016

Mark A. Wilson  and
Paul D. Taylor
Mark A. Wilson
Affiliation:
Department of Geology, The College of Wooster, Wooster, Ohio 44691, USA 〈mwilson@wooster.edu〉
Paul D. Taylor
Affiliation:
Department of Earth Sciences, Natural History Museum, London SW7 5BD, UK 〈p.taylor@nhm.ac.uk〉
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Abstract

Zigzagopora wigleyensis n. gen. n. sp. is an Upper Ordovician (Sandbian, early Caradoc) cyclostome bryozoan from the Arbuckle Mountains of Oklahoma, USA. It has runner-type colonies characterized by a mostly uniserial, geniculate arrangement of monomorphic zooids that bud alternately left and right, producing a zig-zag pattern of growth. This new genus has calcified interior walls and non-pseudoporous exterior walls. It is thus most likely affiliated with the paleotubuliporine family Sagenellidae, despite superficial similarities with the corynotrypid cyclostomes with which it co-occurs.

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Articles
Information
Journal of Paleontology , Volume 90 , Issue 3 , May 2016 , pp. 413 - 417
Copyright
Copyright © 2016, The Paleontological Society 

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