Published December 31, 2015
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FIGURE 8 in Crinoids of the stalked family Hyocrinidae (Echinodermata) collected by the USNS Eltanin in the Southern Ocean
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FIGURE 8. Variation in columnal symplexial facets of Feracrinus heinzelleri. A–C, E: specimen USNM 1005435; D, F: specimen USNM 1126896-2; D–F: oblique views; A: proximal most columnal; B, D–E: mid proxistele columnals; C: mid mesistele columnal; D: convex surface due to the development of a new columnal; B, E: same columnal, concave facet with irregular crenular units; F: columnal of proxistele/mesistele transition with ligamentary pits.
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Published as part of Roux, Michel, 2015, Crinoids of the stalked family Hyocrinidae (Echinodermata) collected by the USNS Eltanin in the Southern Ocean, pp. 381-409 in Zootaxa 3990 (3) on page 394, DOI: 10.11646/zootaxa.3990.3.4, http://zenodo.org/record/243049
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