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Fig. 7 | Swiss Journal of Palaeontology

Fig. 7

From: A new echinoderm Lagerstätte from the Pliensbachian (Early Jurassic) of the French Ardennes

Fig. 7

Eodiadema sp. a complete test with primary and secondary spines, on the surface of a sideritic nodule (on the same slab than MNHN A30315), lateral view; scale bar equals 1 mm. b Test fragment showing primary and secondary tubercles and spines in place (NHM EE 14027); scale bar equals 500 μm. c Detail of test fragment surface (NHM EE 14027) showing an articulated ophiocephalous pedicellaria with calcitic rod in place; scale bar equals 100 μm. d Detailed view of an ophiocephalous pedicellaria (NHM EE 14027); scale bar equals 100 μm. Eodiadema sp. e Keeled tooth (GZG.INV.45602) in adaxial view; note the aboral end showing zones of secondary plates; scale bar equals 0.5 mm. keeled tooth (GZG.INV.45603) in abaxial view (f), and lateral view (right side) (g); note the aboral end with an outer zone of fine stereom; scale bar equals 0.5 mm. h spectacle ossicle Binoculites terquemi Deflandre-Rigaud, 1952 (GZG.INV.45604); scale bar equals 200 μm. i, j Hook ossicle Achistrum cf. monochordatum Hodson et al. 1956 (GZG.INV.45605); scale bar equals 200 μm. Broken hook ossicle Achistrum sp. nov. (GZG.INV.45606); note the row of spinelets on outer curved edges; scale bar equals 100 μm (k), and 50 μm (l). All from the Pliensbachian Davoei Zone of Sedan, Ardennes, France; level A, road cutting (a) and main echinoderm level, lorry park cutting (bl)

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