Ophiologimus aiodipius Thuy 2013, sp. nov.

• Main Author: Thuy, Ben
• Format: Other/Unknown Material
• Language: unknown
• Published: 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Ophiuroidea; Ophiurida; Ophiomyxidae; Ophiologimus; Ophiologimus aiodipius; Northeast Atlantic
• Online Access: https://zenodo.org/record/3844119; https://doi.org/10.5281/zenodo.3844119

Ophiologimus aiodipius sp. nov. urn:lsid:zoobank.org:act: C014CC2C-60E3-43F6-B1D6-20F6410E6A97 Fig. 11: 5-6 Diagnosis Species of Ophiologimus with large LAPs displaying coarsely meshed stereom on outer surface; trabeculae of coarsely meshed stereom merged into short, irregular vertical stripes close to spine articulations; up to four lenticular, oblique spine articulations; ridge on inner side of LAPs very slender; ventral part of ridge merged with ventral portion of LAP and connected with dorsal part of ridge by gently rounded kink; tentacle notch rather shallow. Etymology Species name derived from IODP, Integrated Ocean Drilling Program, under which the samples yielding the type material were recovered. Type material Holotype GZG.INV.78536. Paratypes GZG.INV.78537. Type locality and horizon Blake Nose, borehole ODP 171B 1049C 12x5, tropical northeast Atlantic; latest Aptian to earliest Albian, Hedbergella trochoidea to Microhedbergella rischi planktonic foraminifer zones, Early Cretaceous. Additional material GZG.INV.78538 (33 dissociated LAPs). Description Holotype GZG.INV.78536 is a dissociated, large, proximal LAP; slightly wider than high; dorsal edge straight; distal edge convex; proximal edge concave, devoid of spurs; ventral fifth of LAP strongly protruding ventro-proximalwards; ventro-distal tip of LAP slightly protruding; outer surface with coarsely meshed stereom; trabeculae merging into short, irregular, vertical stripes close to spine articulations; coarsely meshed stereom replaced by finely meshed stereom in narrow band along proximal edge of LAP. Four large, lenticular, oblique, slightly elongate, nearly equal-sized and equidistant spine articulations freestanding on non-elevated distal portion of LAP; dorsal and ventral lobes merged by sharp, acute kink proximally into continuous volute; gap between spine articulations and distal edge of LAP narrow, slightly increasing in width ventralwards. Ventral edge of LAP with very large, moderately deeply incised, concave tentacle notch. Inner side of LAP ...