Fig. 9. Fossil lateral arm plates (LAPs) of ophiacanthid brittle stars in external (a) and internal (b) views and articulated arm fragments. 1-5. <i>Lapidaster etteri</i> gen. et sp. nov. from the early Oxfordian (Late Jurassic) of Longecombe, France. 1. NHMB M11209 (holotype), proximal LAP. 2. NHMB 11210 (paratype), median LAP. 3. NHMB M11211 (paratype), distal LAP. 4. NHMB M11212 (paratype), distal arm fragment in lateral view. 5. NHMB M11213 (paratype), distal arm fragment in dorsal (a) and ventral (b) views. 6-8. <i>Lapidaster mastodon</i> gen. et sp. nov. from the late Oxfordian (Late Jurassic) of the Plettenberg, Germany. 6. GZG.INV.78517 (holotype), proximal LAP. 7. GZG.INV.78518 (paratype), median LAP. 8. GZG.INV.78519 (paratype), distal LAP. One common scale bar per species is given, except for 4 and 5.
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.
CC BY 3.0
<a rel="nofollow" class="external free" href="https://dx.doi.org/10.5852/ejt.2013.48">https://dx.doi.org/10.5852/ejt.2013.48</a>