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New and little-known bryozoans from Monte León Formation (early Miocene, Argentina) and their paleobiogeographic relationships

Published online by Cambridge University Press:  09 May 2016

Leandro M. Pérez ,
Juan López-Gappa  and
Miguel Griffin
Leandro M. Pérez
Affiliation:
División Paleozoología Invertebrados, Museo de La Plata Francisco Pascasio Moreno, Paseo del Bosque s/n, La Plata, B1900FWA, Argentina 〈pilosaperez@gmail.com〉, 〈patagonianoyster@gmail.com〉 Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
Juan López-Gappa
Affiliation:
Museo Argentino de Ciencias Naturales Bernardino Rivadavia, Av. Ángel Gallardo 470, Ciudad Autónoma de Buenos Aires, C1405DJR, Argentina 〈lgappa@macn.gov.ar〉 Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
Miguel Griffin
Affiliation:
División Paleozoología Invertebrados, Museo de La Plata Francisco Pascasio Moreno, Paseo del Bosque s/n, La Plata, B1900FWA, Argentina 〈pilosaperez@gmail.com〉, 〈patagonianoyster@gmail.com〉 Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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Abstract

The bryozoan fauna from the South American Cenozoic is poorly known. The study of new material collected in the Monte León Formation (early Miocene), gave us the opportunity to describe four new species: Valdemunitella canui n. sp., Foveolaria praecursor n. sp., Neothoa reptans n. sp., and Calyptotheca santacruzana n. sp. Two of them (V. canui and C. santacruzana) were first recorded by F. Canu and interpreted as recent species from the Australian bryozoan fauna, but are herein described as new species. The stratigraphic range of Otionella parvula (Canu, 1904) is extended to the early Miocene. The present study emphasizes the close relationships between the South American Neogene bryozoan faunas and those of other Gondwanan sub-continents such as New Zealand and Australia.

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Articles
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Journal of Paleontology , Volume 89 , Issue 6 , November 2015 , pp. 956 - 965
Copyright
Copyright © 2016, The Paleontological Society 

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