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Analysis identifies five crinoid species in the Sakmarian Formation, suggesting a diverse taxonomy.
Analysis of a collection of crinoid columnals from the Sakmarian (Lower Permian) Callytharra Formation of Western Australia reveals at least five species attributable to a genus (or genera) of the camerate crinoid subfamily Camptocrininae, not one as previously inferred.Robbert J. Willink* [robblink@ozemail.com.au], PO Box 1664, Sunshine Beach, Queensland 4567, Australia;Jennifer Bauer [bauerjen@umich.edu], Research Museum Collection Manager, University of Michigan Museum of Paleontology, 3600 Varsity Drive, Ann Arbor 48108, Michigan, USA.
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Willink et al. (2026) studied this question.
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