Open Access

Fig. 10


Download original image

Morphology of the carapace and of the chela of the first pair of pereiopods of Palaeastacus Bell, 1850 and species from the Early Jurassic. A: typical carapace groove pattern of Palaeastacus; B: typical chela of the first pair of pereiopods of Palaeastacus; C–E: holotype MSNM i7606 of Palaeastacus meyeri (Garassino, 1996) from the Sinemurian of Osteno (Italy): counterpart (C), general view (D), line drawing of the carapace and P1 chelae (E); F: original figure of Oppel (1862: pl. 4, fig. 5) of the holotype of Palaeastacus numismalis (Oppel, 1853) n. comb. from the Pliensbachian of Gomaringen- Hinterweiler (Germany); G–I: specimen of P. numismalis n. comb. from the Pliensbachian of Böbingen an der Rems (Germany) in Thomas Balle’s collection, Alfdorf: lateral view (B), anterior view (C), schema of the carapace (D). Scale bars: 1 cm. Abbreviations: a: branchiocardiac groove; as: antennal spine; b: antennal groove; b1: hepatic groove; c: postcervical groove; d: gastro-orbital groove; e1e: cervical groove; i: inferior groove; ip: intercalated plate; PoA: postorbital area; os: orbital spine; χ: attachment site of adductor testis muscle; ω: attachement site of mandibular muscle. Photographs: A. Garassino (C–D), W. K. Mayer (G, I). Line drawings: J. Devillez.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.