ERYMIDAE Van Straelen, 1925

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 : 652

publication ID	https://doi.org/10.5252/geodiversitas2019v41a17
publication LSID	urn:lsid:zoobank.org:pub:541CF827-F02E-4086-8FB0-2C0033DD429A
DOI	https://doi.org/10.5281/zenodo.3703582
persistent identifier	https://treatment.plazi.org/id/03C23C58-FFE7-FFDB-1AFB-86F1FDF6F9E7
treatment provided by	Valdenar (2020-03-03 13:21:37, last updated 2024-11-29 12:25:38)
scientific name	ERYMIDAE Van Straelen, 1925
status

Treatment

Family ERYMIDAE Van Straelen, 1925

PRELIMINARY REMARKS

Eryma modestiforme ( Schlotheim, 1822) ( Fig. 6 View FIG ), Palaeastacus fuciformis ( Schlotheim, 1822) ( Fig. 7 View FIG ) and Pustulina minuta ( Schlotheim, 1822) ( Fig. 7 View FIG ) are the three most common erymids found in the Solnhofen Lithographic Limestones. Numerous specimens are almost complete, but the compression often impedes the identification of the carapace grooves, which are important for the systematic of the Erymidae . Instead, we use the general ornamentation and the features of the P1 chelae (shape and ornamentation) to distinguish the erymid lobsters. Indeed, P. fuciformis and P. minuta have P1 chelae with a subrectangular propodus bearing short and wide fingers, while the fingers of E. modestiforme are longer than the propodus and are progressively narrowing to their distal extremity. Moreover, E. modestiforme is ornamented by small tubercles and depressions, while P. minuta is covered by coarse rounded tubercles and P. fuciformis bears strong spines on its carapace and its P1 propodus.

References

SCHLOTHEIM E. F. VON 1822. - Beitrage zur naheren Bestimmung der versteinerten und fossilen Krebsarten. Nachtrage zur Petrefaktenkunde, Becker, Gotha: 17 - 37.

VAN STRAELEN V. 1925. - Contribution a l'etude des crustaces decapodes de la periode jurassique. Memoires de la Classe des Sciences de l'Academie royale de Belgique 7: 1 - 462.

Figures

FIG. 6. — Eryma modestiforme (Schlotheim, 1822) from the Late Jurassic Solnhofen Lithographic Limestones (Bavaria, Germany): A, specimen MNHN.F.B13463 from Solnhofen; B, specimen MNHN.F.A33507 from Solnhofen; C, D, specimen MNHN.F.A70905 (unknown locality): general view (C) and line drawing (D); E, F, specimen MNHN.F.B13452 from Solnhofen: general view (E) and line drawing of the carapace (F); G, specimen MNHN.F.A70906 from Painten; H, specimen MNHN.F.A32408 from Eichstätt.Scale bars:A-G,1 cm; H, 0.5 cm. Abbreviations: a, branchiocardiac groove;as, antennal spine; a2, antenna; b, antennal groove; b1, hepatic groove; c, postcervical groove; d, gastro-orbital groove; di, diaeresis; e1e, cervical groove; ip, intercalated plate; P1-P2, periopods 1-2. Preparation: Y. Despres (C). Photographs: C. Lemzaouda (A, B, E), L. Cazes (C, G, H). Line drawings: J. Devillez.

FIG. 7. — Other Erymoidea from the Late Jurassic Solnhofen Lithographic Limestones (Bavaria, Germany): A-C, specimen MNHN.GG.2004/8245 of Palaeastacus fuciformis (Schlotheim, 1822) from Solnhofen: specimen in natural light (A), specimen in UV light (B) and line drawing (C); D, specimen MNHN.F.B13445 of Pustulina minuta (Schlotheim, 1822) from Solnhofen in UV light. Abbreviations: a1, antennule; a2, antenna; e, eye; Mxp3, third maxillipeds; P1-P5, periopods 1 to 5. Scale bars: A-C, 1 cm; D, 0.5 cm. Photographs: L. Cazes. Line drawing: J. Devillez.