Fig. 1. Dorsal disc shapes and radial shields in brittle stars as defined for the purpose of this study. A. Flat (<i>Ophioderma</i> sp.). B. High, with bar-like radial shields (<i>Asteronyx loveni</i> Müller &amp; Troschel, 1842 (dry specimen)). C. Sac-like, radial shields absent (<i>Ophiotholia spathifer</i> (Lyman, 1879)). D. Thick skin obscuring scales and plates (<i>Ophiosparte gigas</i> Koehler, 1922). E. Flat, radial shield scalene triangular to half circle (<i>Amphiura chiajei</i> Forbes, 1843). F. Arm combs, radial shields isosceles triangular to pearshaped (<i>Ophiura ophiura</i> (Linnaeus, 1758)).
Goharimanesh, M., Stöhr, S., Mirshamsi, O., Ghassemzadeh, F., &amp; Adriaens, D. (2021). Interactive identification key to all brittle star families (Echinodermata; Ophiuroidea) leads to revised morphological descriptions. <i>European Journal of Taxonomy</i>, 766(1), 1-63.
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