Palaeastacus loryi Devillez & Charbonnier & Hyžný & Leroy 2016, n. comb.

• Main Authors: Devillez, Julien, Charbonnier, Sylvain, Hyžný, Matúš, Leroy, Lucien
• Format: Other/Unknown Material
• Language: unknown
• Published: 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Decapoda; Erymidae; Palaeastacus; Palaeastacus loryi; Antarctic; Alexander Island; Titus; Antarc*
• Online Access: https://zenodo.org/record/7603742; https://doi.org/10.5281/zenodo.7603742

Palaeastacus loryi (Van Straelen, 1923) n. comb. (Fig. 7F, G) Eryma loryi Van Straelen, 1923: 93; 1936: 7, 8, pl. 1, fig. 6. — Glaessner 1929: 155. — Moret 1946: 50, fig. 1. — Roger 1946: 42. — Secrétan 1964: 69. — Förster 1966: 123. — Feldmann & Titus 2006: 64. — Schweitzer et al. 2010: 24. TYPE MATERIAL. — Holotype (OSUG, probably lost). TYPE LOCALITY. — Malleval, Isère department, Rhône-Alpes region, southeastern France. TYPE AGE. — Valanginian, Early Cretaceous. DESCRIPTION Subcylindrical carapace (holotype:CL = 60 mm, CH = 30 mm); deep cervical, postcervical and branchiocardiac grooves; short gastro-orbital groove originating as a slight median inflexion of cervical groove; short antennal groove; postcervical groove parallel to branchiocardiac groove, not joined to dorsal margin, joined to hepatic groove; branchiocardiac groove, joined to dorsal margin, slightly sinuous dorsally, joined to hepatic groove; concavo-convex hepatic groove, poorly preserved; carapace homogeneously and densely covered with small tubercles following crescent-shaped pits. DISCUSSION The holotype was not found in the palaeontological collections of OSUG at Grenoble, France. Our review of the species is based on the line drawing and the figure presented by Van Straelen (1923: fig. 93) and Van Straelen (1936: pl. 1, fig. 6) respectively. Firstly, the line drawing is misleading by exhibiting intercalated plate not visible on the figure. Indeed, the cephalic part clearly appears to be crushed. Moreover, the carapace grooves seem to be incompletely reported. The examination of the figures leads us to identify the postcervical groove parallel to the branchiocardiac groove and joined to the hepatic groove. This pattern is typical of Palaeastacus. Hence, the new combination Palaeastacus loryi (Van Straelen, 1923), n. comb. is proposed herein. Other species of Palaeastacus are known from the Early Cretaceous such as Palaeastacus foersteri Taylor, 1979 (Barremian of Alexander Island, Antarctic; Fig. 3A, B), Palaeastacus tenuidigitatus ...