Figure 5 from: Márquez-Borrás F, Solís-Marín FA, Mejía-Ortiz LM (2020) Troglomorphism in the brittle star Ophionereis commutabilis Bribiesca-Contreras et al., 2019 (Echinodermata, Ophiuroidea, Ophionereididae). Subterranean Biology 33: 87-108. https://doi.org/10.3897/subtbiol.33.48721

Figure 5 Scanning electron micrographs (SEM) of central region of dorsal arm plates (DAP) of Ophionereis brittle stars. SEM of a DAP from mature Ophionereis commutabilis (a) and O. reticulata (b). SEM of a DAP of juvenile O. reticulata (c). SEM of a cross-section of a fractured DAP from mature O. commutabilis (d) and O. reticulata (e). Orientation (do: dorsal, v: ventral). Scale bars: 50 μm (a–c); 100 μm (d–e).