Abstract
Based on new finds and additional evidence, the interpretation of the enigmatic echinoderm Bolboporites is confirmed; it is a blastozoan echinoderm most likely related to eocrinoids, in which juvenile holdfast, columnals, and reduced skeletal plates of the theca were fused into a single skeletal element, to which a biserial brachiole was attached.
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ACKNOWLEDGMENTS
The authors are grateful to A.Yu Ivantsov, P.V. Fedorov, S.S. Terentyev, N.K. Semenov, G.V. Mirantsev, G.A. Anekeeva for replenishing the collection of Bolboporites at the A.A. Borissiak Paleontological Institute in Moscow. Additional thanks go to G.V. Mirantsev for the photographs of Timorocidaris taken during his visit to Naturalis Biodiversity Center, Leiden. We thank S.V. Bagirov for the photography, R.A. Rakitov for help in SEM study, and M.K. Emelyanova and G.A. Anekeeva for her help in the design of the drawings and the photographic plate.
Funding
This study was supported in part by the Russian Science Foundation (project no. 19-14-00346). This paper is a contribution to the International Geoscience Program (IGCP) Project 653—The Onset of the Great Ordovician Biodiversification Event.
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Kushlina, V.B., Rozhnov, S.V. Bolboporites: Interpretation Getting Back on Track. Paleontol. J. 55, 977–984 (2021). https://doi.org/10.1134/S0031030121090069
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DOI: https://doi.org/10.1134/S0031030121090069