Résumés
Abstract
A new specimen of Batrachichnus salamandroides was recovered from a recently discovered fossil-bearingsite situated along the southern shore of Grand Lake, New Brunswick, among a diverse ichnofaunal assemblagefrom the Middle Pennsylvanian (upper Bolsovian; lower Moscovian), upper Minto Formation. The identity ofthe tracemaker of this ichnogenus is reinterpreted as a composite of various late Paleozoic tetrapod taxa, basedon similarities of the postcranial skeletons, notably that of the manus and pes, of both temnospondyls and some“microsaurs”. These results indicate that the tracemaker of the monospecific ichnogenus Batrachnichus is notlimited solely to a temnospondyl tracemaker, as previously interpreted, and that some “microsaurs” should alsobe considered among tracemaker candidates for this ichnotaxon.
Résumé
Un nouveau spécimen de Batrachichnus salamandroides a été récupéré d’un emplacement fossilifère récemment découvert le long de la rive méridionale du Grand Lac, Nouveau-Brunswick, parmi un assemblage ichnofaunique diversifié remontant au Pennsylvanien moyen (Bolsovien supérieur, Moscovien inférieur) de la partie supérieure de la Formation de Minto. On a réinterprété l’identité de l’auteur des traces de cet ichnogenre y voyant un composite de divers taxons tétrapodes du Paléozoïque tardif d’après des similarités des squelettes postcrâniens, notamment ceux des paumes et des pieds, des deux temnospondyles et de certains « microsauriens ». Ces résultats révèlent que l’auteur des traces de l’ichnogène monospécifique Batrachnichus ne se limite pas seulement à un producteur de traces temnospondyle, comme l’avaient supposé des interprétations antérieures, et que certains « microsauriens » devraient également être considérés parmi les producteurs de traces possibles de cet ichnotaxon.
Parties annexes
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