Fig. 21. Fossil lateral arm plates (LAPs) of ophiacanthid brittle stars in external (a) and internal (b) views and articulated arm fragment in ventral (a) and dorsal (b) views. 1. <i>Ophiogaleus constrictus</i> (Hess, 1966) comb. nov. from the late Oxfordian (Late Jurassic) of Savigna, France; GZG.INV.78627 distal arm fragment. 2. <i>Ophiogaleus</i> sp. from the early Kimmeridgian (Late Jurassic) of Geisingen, Germany; GZG.INV.78632, proximal LAP. 3-4. <i>Ophiogaleus danicus</i> (Rasmussen, 1952) comb. nov. from the early Maastrichtian (Late Cretaceous) of Rügen, Germany. 3. GZG.INV.78635, proximal LAP. 4. GZG. INV.78636, distal LAP. 5-6. <i>Hanshessia</i> sp. nov. innom. 1 from the late Sinemurian to early Pliensbachian (Early Jurassic) of the Glasenbach Gorge, Austria. 5. NHMW 2012/0137/0021, proximal LAP. 6. NHMW 2012/0137/0022, proximal LAP. 7-9. <i>Hanshessia</i> sp. nov. innom. 2 from the early Bathonian (Middle Jurassic) of La Pouza, France. 7. GZG.INV.78637, proximal LAP. 8. GZG.INV.78638, proximal LAP. 9. GZG.INV.78639, distal to median LAP. One common scale bar per species except for 1.
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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