Loganellia FREDHOLM 1990
Authors/Creators
Description
LOGANELLIA FREDHOLM, 1990
Type species — Thelodus scoticus Traquair, 1898.
LOGANELLIA SP. CF. L. CUNEATA
(TABLE 1; SUPPL. 1, FIGS. 1, 4)
Referred specimens —One scale from BCII level 27’ (8.2 m); two scales from level 430.5’ (131.2 m): Roberts Mountains Formation.
Description and comparison —Elongate teardrop-shaped scales with two sharp crown ridges. The base is oval and extends about two-thirds crown length. There is no anterior basal spur.
This scale resembles those described as Loganellia cuneata (Gross 1947, pl. 3; 1967, pl. 3) from the Přidolí of Britain, Europe, and Russia (Märss et al. 2007) but also is similar to the much older L. sulcata and L. prolata (Märss et al. 2002) from the Lower Silurian of arctic Canada. Without more material, the designation can only be tentative.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- FREDHOLM
- Kingdom
- Animalia
- Phylum
- Chordata
- Order
- Loganelliformes
- Family
- Loganelliidae
- Genus
- Loganellia
- Taxon rank
- genus
- Taxonomic concept label
- Loganellia FREDHOLM, 1990 sec. Burrow, Murphy & Turner, 2023
References
- Fredholm, D. 1990. Agnathan vertebrates in the Lower Silurian of Gotland, Sweden. Geologiska Foreningens i Stockholm Forhandlingar 112: 61 - 84.
- Traquair, R. H. 1898. [Report on fossil fishes]. Summary of Progress, Geological Survey of Great Britain, 1897, p. 72 - 76.
- Gross, W. 1947. Die Agnathen und Acanthodier des obersilurischen Beyrichienkalks. Palaeontographica Abt. A 96: 91 - 161.
- Marss, T., S. Turner, and V. Karatajute-Talimaa. 2007. Agnatha II-Thelodonti. Volume 1 B. 143 pp. Verlag Dr Friedrich Pfeil, Munich.
- Marss, T., M. V. H. Wilson, and R. Thorsteinsson. 2002. New thelodont (Agnatha) and possible chondrichthyan (Gnathostomata) taxa established in the Silurian and Lower Devonian of Arctic Canada. Proceedings of the Estonian Academy of Sciences, Geology 51: 88 - 120.