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Article: The evolution of canaliculate rudists in the light of a new canaliculate polyconitid rudist from the Albian of the Central Pacific

Publication: Palaeontology
Volume: 57
Part: 5
Publication Date: September 2014
Page(s): 951 962
Author(s): <p>Shin-Ichi Sano, Yasuhiro Iba, Peter W. Skelton, Jean-Pierre Masse, Yolanda M. Aguilar and Tomoki Kase</p>
Addition Information

How to Cite

SANO, S.-I., IBA, Y., SKELTON, P.W., MASSE, J.-P., AGUILAR, Y.M. and KASE, T. 2014. The evolution of canaliculate rudists in the light of a new canaliculate polyconitid rudist from the Albian of the Central Pacific. Palaeontology57, 5, 951–962. doi: 10.1111/pala.12096

Author Information

  • Shin-Ichi Sano - Fukui Prefectural Dinosaur Museum, Katsuyama, Fukui, Japan (email:
  • Yasuhiro Iba - Department of Natural History Sciences, Hokkaido University, Sapporo, Japan (email:
  • Peter W. Skelton - Department of Environment, Earth and Ecosystems, The Open University, Milton Keynes, UK (email:
  • Jean-Pierre Masse - Aix-Marseille Université, CEREGE, Centre Saint-Charles, Marseille Cedex 03, France (email:
  • Yolanda M. Aguila - Mines and Geosciences Bureau, Diliman, Quezon City, Philippines (email:
  • Tomoki Kase - Department of Geology and Paleontology, National Museum of Nature and Science, Tsukuba, Ibaraki, Japan (email:

Publication History

  • Issue published online: 12 SEP 2014
  • Article first published online: 31 JAN 2014
  • Manuscript Accepted: 16 DEC 2013
  • Manuscript Received: 31 OCT 2013

Funded By

Japan Society for the Promotion of Science (JSPS) Research. Grant Numbers: 25800285, 23840002

Online Version Hosted By

Wiley Online Library
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A new polyconitid rudist, Magallanesia canaliculata gen. et sp. nov., of probably late Albian age, is described from the Pulangbato area, central Cebu Island, the Philippines in the western Central Pacific and Takuyo-Daini Seamount, now located in the Northwest Pacific. It is similar to Praecaprotina Yabe and Nagao, 1926, a Japanese–Central Pacific endemic genus of late Aptian – early Albian age, but differs in having canals that developed by partitioning of the large ectomyophoral cavity in the posterior part of the left valve. Its discovery strengthens the evidence for Pacific endemism in Albian times. Several other clades of canaliculate rudists flourished or evolved at the same time in different regions of the Tethyan Realm, suggesting the presence of common global biological and/or environmental factors stimulating the evolution of the canals despite such endemism. Furthermore, the finding of a canaliculate polyconitid provides evidence in favour of the evolutionary hypothesis of a polyconitid origin for the Late Cretaceous canaliculate rudist family Plagioptychidae Douvillé, 1888.

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