Figure 2. <i>Psammaster davidsoni</i> (de Loriol and Pellat 1874). Disc of the lectotype NHMUK PI E 53996, (a) photography and (b) interpretation drawing. Dashed lines indicate uncertain contour of the ossicles. Coloured areas indicate ossicle homology. Orange: the central; red: the madreporite; light green: carinals; dark green: primary radials; light blue: superomarginals; dark blue: primary interradials; pink: abactinals. Scale bars: 5 mm.
Fau M., Villier L. Ewin T.A.M., Gale A.S. (2020)
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Fau M., Villier L. Ewin T.A.M., Gale A.S. (2020). A revision of <i>Ophidiaster davidsoni</i> de Loriol and Pellat 1874 from the Tithonian of Boulogne (France) and its transfer from the Valvatacea to the new forcipulatacean genus <i>Psammaster</i> gen. nov. <i>Fossil Record</i>. 23(2): 141–149. <a rel="nofollow" class="external free" href="https://doi.org/10.5194/fr-23-141-2020">https://doi.org/10.5194/fr-23-141-2020</a>