FIG. 37 in Devonian acanthodians from Severnaya Zemlya Archipelago (Russia)

• Main Author: Valiukevičius, Juozas
• Format: Other/Unknown Material
• Language: unknown
• Published: 2003
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Acanthodii; Climatiiformes; Climatiiformes (awaiting allocation); Gomphonchus; Severnaya Zemlya; Pioneer Island
• Online Access: https://zenodo.org/record/4665179; https://doi.org/10.5281/zenodo.4665179

FIG. 37. — Poracanthodes punctatus Brotzen, 1934, scale histology; A, vertical longitudinal section through the old? scale with randomly displaced pores, thin section 3365; B, magnified right area of the same section; C, vertical longitudinal section through the scale with concentrically displaced pores, thin section 3462; D, vertical transverse section through the posterior part of scale with concentrically displaced pores, thin section 3464; E, vertical longitudinal section of scale, thin section 973; F, magnified central area of the same section. Paratype LIG 35-A-391; Pioneer Island, sample 12-76. Upper Silurian, Pridoli, Member 3 (A, B) and Spokojnaya River, outcrop 41, bed 12; Severnaya Zemlya Formation (C-F). Abbreviations: arcpc, arcade pore canal; avc, ascending vascular canal; oc, osteocyte cavity; po, pore opening; prgl, primordial growth lamella; rpc, radial pore canal. Scale bars: 0.1 mm. Published as part of Valiukevičius, Juozas, 2003, Devonian acanthodians from Severnaya Zemlya Archipelago (Russia), pp. 131-204 in Geodiversitas 25 (1) on page 178, DOI:10.5281/zenodo.4665088