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Journal of Micropalaeontology An open-access journal of The Micropalaeontological Society
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Volume 36, issue 2
J. Micropalaeontol., 36, 222–223, 2017
https://doi.org/10.1144/jmpaleo2016-016
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
J. Micropalaeontol., 36, 222–223, 2017
https://doi.org/10.1144/jmpaleo2016-016
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

  30 Mar 2017

30 Mar 2017

An aberrant bi-apical Follicucullus (Albaillellaria) from the late Guadalupian (Middle Permian), with the possible oldest evidence of double malformation in radiolarians

Tsuyoshi Ito1, Yusuke Kitagawa2, and Atsushi Matsuoka3 Tsuyoshi Ito et al.
  • 1Research Institute of Geology and Geoinformation, Geological Survey of Japan, AIST, Tsukuba, Ibaraki 305-8567, Japan
  • 2Mitsubishi Material Techno Co., Tokyo 102-8205, Japan
  • 3Department of Geology, Faculty of Science, Niigata University, Niigata 950-2181, Japan

Abstract. An aberrant bi-apical Follicucullus specimen (Albaillellaria, Radiolaria) has been discovered from an upper Guadalupian (Middle Permian) chert block of the Kamiaso Unit of the Mino terrane, central Japan. If this specimen was formed with double malformation, it would be the oldest record of this phenomenon in radiolarians and the first record of its kind in Albaillellaria.

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