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Figure 3. Otarionella rastrum sp. nov. (a–g, j–y, aa, bb) Scanning electron micrographs of silicified specimens from the middle member of the Bissounel Formation (early to late Emsian), Bissounel Peak, Montagne Noire, France. (h, i, z, cc) Digital photographs of calcareous specimens from the Mont Peyroux Formation (late Emsian), Montagne Noire, France. Scale bars 0.5 mm (a–s) and 0.25 mm (t–cc). (a–g) Librigenae, dorsal views; (a) smallest meraspid specimen, UMC-IP509; (b) meraspis, UMC-IP510; (c) meraspis (mirrored), UMC-IP511; (d) meraspis, UMC-IP512; (e) meraspis (?), UMC-IP513; (f) meraspis (?) (mirrored), UMC-IP514; (g) holaspis (?) (mirrored), UMC-IP515. (h, i) Librigenae, dorso-lateral views; (h) holaspis with genal spine broken, UMC-IP516; (i) holaspis with lateral border broken (mirrored), UMC-IP517. (j) Right librigena, ventral view (mirrored), UMC-IP518. (k) Left librigena (note the three rows of lateral border spines), lateral view, UMC-IP519. (l–n) Hypostomes, ventral views; (l) UMC-IP520; (m) UMC-IP521; (n) UMC-IP522. (o–s) Thoracic segments with (o, q, s) or without (p, r) an axial spine; (o) right lateral view, UMC-IP523; (p) posterior view, UMC-IP524; (q) anterior view, UMC-IP525; (r) dorsal view (front to the top), UMC-IP526; (s) dorsal view (front to the top), UMC-IP527. (t–z) Transitory pygidia and pygidia, dorsal views; (t) meraspid degree 2, UMC-IP528; (u) meraspid degree 3, UMC-IP529; (v) large meraspid degree 3, UMC-IP530; (w) meraspid degree 4, UMC-IP531; (x) meraspis, UMC-IP532; (y) small holaspis (?), UMC-IP533; (z) large holaspis, UMC-IP534. (aa) Small meraspis, ventral view, UMC-IP535; (bb) meraspid degree 2, lateral view (mirrored), UMC-IP528; (cc) large holaspis, lateral view, UMC-IP534.

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