Ito, Tsuyoshi, Yusuke Kitagawa, and Atsushi Matsuoka.
"An aberrant bi-apical Follicucullus (Albaillellaria) from the late Guadalupian (Middle Permian), with the possible oldest evidence of double malformation in radiolarians." Journal of Micropalaeontology
36.2
(2017):
222-223.
Web. 29 May. 2020.
