Figure 2 in Phylogeny of Labidodemas and the Holothuriidae (Holothuroidea: Aspidochirotida) as inferred from morphology

Figure 2. Rosettes vs. buttons according to Panning (1951: 78). A, rosettes of Holothuria (Halodeima) grisea Selenka, 1867, with a schematic representation of the bifurcate rod. B, true buttons of H. (Platyperona) sanctori Delle Chiaje, 1823, with a schematic representation of the branching of the primary rod.Published as part of Samyn, Yves, Appeltans, Ward & Kerr, Alexander M., 2005, Phylogeny of Labidodemas and the Holothuriidae (Holothuroidea: Aspidochirotida) as inferred from morphology, pp. 103-120 in Zoological Journal of the Linnean Society 144 (1) on page 105, DOI: 10.1111/j.1096-3642.2005.00158.x, http://zenodo.org/record/543328