| Genus | Triazeugacanthus |
|---|---|
| Parent authority | Miles, 1966 |
| Species | affinis |
| Authority | Whiteaves, 1887 |
Triazeugacanthus is an extinct genus of spiny shark from the Devonian of Canada. It contains a single species, Triazeugacanthus affinis.[1] With total length up to 5.272 centimetres (2.076 in), it is known from multiple ontogenetic stages.[2][3]
Palaeobiology
Life history
In larval T. affinis, the first anatomical features to develop are the notochordal elements and the eye lenses. Otoliths form shortly afterwards. The first appendicular elements to develop are the scapulocoracoid and the pectoral spine.[4]
References
- ^ "†Triazeugacanthus Miles 1966 (spiny fish)". Paleobiology Database
- ^ Chevrinais, Marion; Sire, Jean-Yves; Cloutier, Richard (12 April 2017). "From body scale ontogeny to species ontogeny: Histological and morphological assessment of the Late Devonian acanthodian Triazeugacanthus affinis from Miguasha, Canada". PLOS ONE. 12 (4). Bibcode:2017PLoSO..1274655C. doi:10.1371/journal.pone.0174655. ISSN 1932-6203. PMC 5389634. PMID 28403168
- ^ Chevrinais, Marion; Cloutier, Richard; Sire, Jean-Yves (28 February 2015). "The revival of a so-called rotten fish: the ontogeny of the Devonian acanthodian Triazeugacanthus". Biology Letters. 11 (2). doi:10.1098/rsbl.2014.0950. ISSN 1744-9561. PMC 4360106. PMID 25694507. Retrieved 17 May 2026. – via The Royal Society Publishing.
- ^ Chevrinais, Marion; Balan, Etienne; Cloutier, Richard (23 December 2015). "New Insights in the Ontogeny and Taphonomy of the Devonian Acanthodian Triazeugacanthus affinis From the Miguasha Fossil-Lagerstätte, Eastern Canada". Minerals. 6 (1): 1. Bibcode:2015Mine....6....1C. doi:10.3390/min6010001. ISSN 2075-163X