Cycleryon propinquus ( Schlotheim, 1822 )

Odin, Giliane P., Charbonnier, Sylvain, Devillez, Julien & Schweigert, Günter, 2019, On unreported historical specimens of marine arthropods from the Solnhofen and Nusplingen Lithographic Limestones (Late Jurassic, Germany) housed at the Muséum national d’Histoire naturelle, Paris, Geodiversitas 41 (17), pp. 643-662 : 654

Cycleryon propinquus ( Schlotheim, 1822) ( Fig. 9 )

STUDIED MATERIAL. — Charbonnier & Garassino (2012) listed five specimens (Appendix 1). We do not change their contribution.

COMMENTS

The specimen MNHN.F.B13436 ( Fig. 9A ) is preserved in ventral view and exhibits asymmetrical first pereiopods: the right P1 presents the usual aspect whereas the left one is much more reduced. According to Van Straelen (1925) and Audo (2014), this physiology is not native but rather due to a regenerative heterochely. The crista dentata (serrated inner margin of the third maxilliped ischium) is visible.

Figures

FIG. 9. — A, Cycleryon propinquus (Schlotheim,1822):specimen MNHN.F.B13436 from Solnhofen;B-H, Eryon cuvieri Desmarest,1817:B, specimen MNHN.F.A33501 from Solnhofen;C, specimen MNHN.GG.2004/8218 from Solnhofen area;this specimen was referred to as coming from Pappenheim;since there are no Solnhofen Lithographic Limestones there, while many traders lived there, this specimen was probably purchased in Pappenheim; D, E, specimen MNHN.GG.2004/8220 from Solnhofen, natural light (D) and UV light (E); F, G, specimen MNHN.F.A33545 from Solnhofen, natural light (F) and UV light (G); H, specimen MNHN.F.B13439 from unknown locality. Scale bars: A, C, F, H, 2 cm; B, D, E, F, 1 cm. Photographs: L. Cazes.