Fig. 16
Longwyaster delsatei gen. nov., sp. nov. Isolated ossicles. a–d, f–h, j, m Abactinal ossicles. a, d Abactinal and lateral views of an abactinal ossicle with a bulbous process. NHMUK EE 16,617. b Large proximal radial ossicle. NHMUK EE 16,618. c, f, m Abactinal ossicles showing attachment sites for a crown of spines. NHMUK EE 16,619–21. g, h Primary radial ossicle in abactinal g and proximal h views. NHMUK EE 16,622. j Radial ossicle. NHMUK EE 16,623–4. e i Interradial chevron plates, actinal view. NHMUK EE 16,625. k, l, Oral ossicle in radial k and interradial l views. NHMUK EE 16,626. n Actinolateral spine. NHM UK EE 16,627. o–q Adambulacral ossicles, actinal view. NHMUK EE 16,628–30. r, s Ambulacral ossicles, actinal views. NHMUK EE 16,631–2. Road cutting on N52; lower Bajocian, Laeviuscula Zone (see Delsate 1993; Thuy 2015), Longwy Formation, from lower of two marl beds described by Delsate (1993), Longwy, Ardennes, France. Scale bars equal 0.5 mm (k, l, p, s), 0.2 mm (a–j, m–o, r) and 0.1 mm (q)