Fig. 18. Fossil lateral arm plates (LAPs) of ophiacanthid brittle stars in external (a) and internal (b) views. 1-2. <i>Ophiotreta</i> sp. nov. innom 2 from the Langhian (middle Miocene) of Stotzing (1) and Mannersdorf (2), Austria. 1. NHMW 2012/0139/0003, proximal LAP. 2. NHMW 2012/0139/0001, proximal LAP. 3-4. <i>Europacantha paciphila</i> gen. et sp. nov. from the late Anisian (Middle Triassic) of Felsöörs, Hungary. 3. MHI 2090/1 (holotype), proximal to median LAP. 4. MHI 2091/1 (paratype), proximal LAP. 5-7. <i>Ophiacantha jaegeri</i> sp. nov. from the latest Hauterivian (Early Cretaceous) of Sarstedt, Germany. 5. GZG.INV.78595 (holotype), proximal LAP. 6. GZG.INV.78596 (paratype), median LAP. 7. GZG. INV.78597 (paratype), distal LAP. 8-9. <i>Ophiacantha</i> sp. nov. innom 1 from the latest Aptian to earliest Albian (Early Cretaceous) of Blake Nose, NE Atlantic. 8. GZG.INV.78599, proximal LAP. 9. GZG. INV.78600, distal LAP. 10. <i>Ophiacantha</i> sp. nov. innom 2 from the latest Aptian to earliest Albian (Early Cretaceous) of Blake Nose, NE Atlantic; GZG.INV.78601, distal LAP. One common scale bar per species.
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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