Scoyenia gracilis White, 1929

Moreau, Jean-David & Gand, Georges, 2022, New data on the Permian ecosystem of the Rodez Basin: ichnofauna (traces of protostomians, tetrapods and fishes), jellyfishes and plants from Banassac-Canilhac (Lozère, southern France), Geodiversitas 44 (31), pp. 975-987 : 978

Scoyenia gracilis White, 1929

( Fig. 3C, D )

MATERIAL EXAMINED. — Two burrows; one is preserved as concave epirelief on slab M486 _ 2022.1.3 ; the other is preserved as convex hyporelief on slab M486 _ 2022.1.2 .

DESCRIPTION

Burrows are unbranched, and straight to slightly curved. They are circular to oval in transverse section, up to 15 mm in diameter and horizontally, obliquely to vertically oriented ( Fig. 3C, D ). The surface of burrows shows longitudinal striations. Longitudinal sections of burrows show prominent meniscate backfills ( Fig. 3C, D ).

REMARKS

Scoyenia gracilis is a very common ichnospecies in non-marine Permian deposits ( Buatois et al. 1997). This ichnotaxon was abundantly reported from some Permian tracksites of the basins of Saint-Affrique and Lodève (e.g. Lopez et al. 2008).

Figures

FIG. 3. — Jellyfish and protostomian traces:A, B, Medusina atava(Pohlig,1892) Walcott,1898,photograph (A) and interpretative sketch (B),specimen M486_2022.1.9; C, D, Diplopodichnus biformis Brady, 1947 (Di.) and Scoyenia gracilis White, 1929 (Sc.); photograph (C) and interpretative sketch, specimen M486_2022.1.2. Abbreviations: Ma., manubrium; Ra., radial canals; Ve., velum. Scale bars: 1 cm.