FIG. 39 in Devonian acanthodians from Severnaya Zemlya Archipelago (Russia) ...
FIG. 39. — Poracanthodes sp. cf. P. subporosus Valiukevicius, 1998, scale and spine histology, from paratype LIG 35-A-376, Spokojnaya River, outcrop 41, bed 12, Severnaya Zemlya Formation; A, vertical longitudinal section through the central part of scale with pore canal openings on the posterior cr...
| Main Author: | |
|---|---|
| Format: | Still Image |
| Language: | unknown |
| Published: |
Zenodo
2003
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.5281/zenodo.4665182 https://zenodo.org/doi/10.5281/zenodo.4665182 |
| Summary: | FIG. 39. — Poracanthodes sp. cf. P. subporosus Valiukevicius, 1998, scale and spine histology, from paratype LIG 35-A-376, Spokojnaya River, outcrop 41, bed 12, Severnaya Zemlya Formation; A, vertical longitudinal section through the central part of scale with pore canal openings on the posterior crown half, anterior to left, thin section 3465; B, vertical transverse section through the central part of scale with pore canal openings on the extreme posterior part only, thin section 3467; C, D, transverse sections through the unidentified fin spines, thin sections 3471 (C) and 3470 (D). Abbreviations: abo, acellular bone; arcpc, arcade pore canal; avc, ascending vascular canal; dd, durodentine; dt, dentine tubule; lvc, longitudinal vascular canal; oc, osteocyte cavity; os, osteon; po, pore opening; rpc, radial pore canal; smd, simple mesodentine. Scale bar: 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 180, DOI: 10.5281/zenodo.4665088 ... |
|---|