Figure 11 in Classification of Isocrinida (Echinodermata: Crinoidea) with the description of a new extant genus and species from the western Pacific

Figure 11. Ancestry of the main morphological characters of Isocrinida. The list of characters taken into account is that of those identified in extant isocrinids. Abbreviations: Balanocr, balanicrinine type; Iso, isocrinine type; Diplo, diplocrinine type; No Cri, absence of inner crenularium; Distal, oriented downwards; Altern, alternicirration; Emb S, embayed synarthry; Syno2, secondary synostosis (cryptosynarthry); Sympl, marginal symplexial crenularium; D sm, deep symmorphy; Syno1, primary synostosis. Millericrinus and Angulocrinus are indicated for comparison with Proisocrinus (see text).