Fig. 16 in Temporary expansion to shelf depths rather than an onshore-offshore trend: the shallow-water rise and demise of the modern deep-sea brittle star family Ophiacanthidae (Echinodermata: Ophiuroidea)

Fig. 16. Skeletal plates of fossil and Recent ophiacanthid brittle stars; lateral arm plates (LAPs) in external (a) and internal (b) views. 1-3. Ophiotreta durbanensis (Mortensen, 1933), Recent. 1. Proximal LAP. 2. Distal LAP. 3. Arm spine. 4. Ophiotreta valenciennesi (Lyman, 1879), Recent; proximal to median LAP. 5-6. Ophiopristis procera (Koehler, 1904), Recent. 5. Proximal LAP. 6. Distal LAP. 7-10. Ophiotreta stefaniae sp. nov. from the late Oxfordian (Late Jurassic) of the Plettenberg, Germany. 7. GZG.INV.78583 (holotype), proximal LAP. 8. GZG.INV.78584 (paratype), proximal LAP. 9. GZG. INV.78585 (paratype), median LAP. 10. GZG.INV.78586 (paratype), distal LAP. One common scale bar per species is given, except for 3.