The European eel is a barracuda sister
Earlier we looked at
the moray eel and the electric eel.
Today the European eel,
(Anguilla anguilla) enters the large reptile tree (LRT, 1510 taxa) alongside the barracuda, Sphyraena. Phylogenetically they are some distance away from the electric eel (Electrophorus) and the moray eel (Gymnothorax).
Anguilla anguilla (Linneaus 1758; up to 80cm in length, 1.5 exceptionally) is the extant European eel, a sister to the barracuda in the LRT. It lacks pelvic fins and the tail has reverted to a straight tail. The life cycle includes breeding and young hatching in the mid-Atlantic with migration back to European rivers before the adults return to the mid-Atlantic. Anguilla lacks the circumorbital bones, traits shared with the Northern Pike, Esox. Bones are relabeled here based on sister taxa. Note the premaxillae do not meet medially. The vomer is the anteriormost bone.
References
Gregory WK 1933. Fish skulls. A study of the evolution of natural mechanisms. The American Philosophical Society 23(2). Reprinted 1959, Eric Lundberg, Laurel FL, Noble offset printers, Inc. New York
Linnaeus C 1758. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata.
Source: https://pterosaurheresies.wordpress.com/2019/06/20/the-european-eel-is-a-barracuda-sister/
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