Ichnology of the Devonian (Emsian) Campbellton Formation, New Brunswick, Canada

The Campbellton Formation has long been known to yield a fossil assemblage of Devonian (Emsian) fish and eurypterids at its westernmost exposure near Campbellton and Atholville, and a well described flora and early land animal fauna toward its easternmost exposure near Dalhousie Junction. Although the body fossil assemblage (paleobotany, vertebrate and invertebrate paleontology), paleoecology and paleoenvironmental context of the formation have been extensively studied, ichnofossils are rare and have not been described previously. Fossils from the vertebrate and eurypterid bearing 'Atholville Beds' contain a low diversity ichnofossil assemblage represented by three ichnotaxa: Monomorphichnus,?Taenidium and Helminthoidichnites. Monomorphichnus is proposed here as being produced by the produced by the activity of the eurypterid Pterygotus anglicus. La formation de Campbellton est depuis longtemps reconnue pour contenir un assemblage de fossiles de poissons et d'eurypterides du Devonien (Emsien) sur son affleurement extreme ouest pres de Campbellton et d'Atholville, ainsi que pour sa flore et sa faune d'animaux terrestres anciens bien definies vers son affleurement extreme pres de Dalhousie Junction. Meme si l'assemblage de fossiles corporels (paleobotanique, paleontologie des vertebres et des invertebres), la paleoecologie et le contexte paleoenvironnemental de la formation ont ete etudies en profondeur, les ichnofossiles sont rares et ceux presents dans cet assemblage n'ont pas ete decrits precedemment. Les fossiles de vertebres et d'eurypterides que recelent les <> abritent un assemblage d'ichnofossiles peu diversifie representes par trois ichnotaxons : le Monomorphichnus, le ?Taenidium et Y Helminthoidichnites. On avance ici que le Monomorphichnus constitue un produit de l'activite de leurypteride Pterygotus anglicus.
[Traduit par la redaction] INTRODUCTION The Devonian (Emsian) Campbellton Formation, exposed along the Restigouche River--Chaleur Bay shoreline in northern New Brunswick, Canada, has been the focus of numerous studies since [...]