FIG. 14. — Acritolepis urvantsevi n. gen., n 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); Acritolepis; Severnaya Zemlya
• Online Access: https://zenodo.org/record/4665135; https://doi.org/10.5281/zenodo.4665135

FIG. 14. — Acritolepis urvantsevi n. gen., n. sp., histological structure of fin spines, Severnaya Zemlya Formation; A, transverse section through the basal part of pectoral spine containing pore openings in the grooves, thin section 3475; B, transverse section through the two-ribbed fragment of pec...