Fig. 19. Fossil skeletal plates of ophiacanthid brittle stars; lateral arm plates (LAPs) in external (a) and internal (b) views. 1-2. <i>Ophiacantha</i> sp. nov. innom 3 from the middle Albian (Early Cretaceous) of Folkestone, Great Britain. 1. GZG.INV.78602, proximal LAP. 2. GZG.INV.78603, distal LAP. 3-5. <i>Ophiacantha reginae</i> sp. nov. from the late Campanian (Late Cretaceous) of Lägerdorf-Alsen, Germany. 3. GZG.INV.78605 (holotype), proximal LAP. 4. GZG.INV.78606 (paratype), median LAP. 5. GZG.INV.78607 (paratype), distal LAP. 6-9. <i>Ophiacantha steffenschneideri</i> sp. nov. from the Rupelian (Oligocene) of Bad Freienwalde, Germany. 6. GZG.INV.78609 (holotype), proximal LAP. 7. GZG.INV.78610 (paratype), median LAP. 8. GZG.INV.78611 (paratype), distal LAP. 9. GZG. INV.78612 (paratype), arm spine. 10-12. <i>Ophiogaleus</i> sp. nov. innom 1 from the late Sinemurian to early Pliensbachian (Early Jurassic) of the Glasenbach Gorge, Austria. 10. NHMW 2012/0137/0017, proximal LAP. 11. NHMW 2012/0137/0018, proximal to median LAP. 12. NHMW 2012/0137/0019, proximal to median LAP. One common scale bar per species except for 9.
Thuy, T. 2013. 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). <i>European Journal of Taxonomy</i> 48: 1-242.
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