A Batrachichnus salamandroides trackway from the Minto Formation of central New Brunswick, Canada: implications for alternative trackmaker interpretations


  • Luke F. Allen Citadel High School, Halifax, Nova Scotia B3H 0A4, Canada
  • Matthew R. Stimson Steinhammer Paleontological Laboratories, Geology/Paleontology section, Natural History Department, New Brunswick Museum, Saint John New Brunswick E2K 1E5, Canada
  • Olivia A. King Steinhammer Paleontological Laboratories, Geology/Paleontology section, Natural History Department, New Brunswick Museum, Saint John New Brunswick E2K 1E5, Canada
  • Rowan E. Norrad Department of Earth and Environmental Science, Acadia University, Wolfville, Nova Scotia B4P 2R6, Canada
  • Spencer G. Lucas New Mexico Museum of Natural History, Albuquerque, New Mexico 87104, USA
  • Arjan Mann Smithsonian Museum of Natural History, Department of Paleobiology, Washington DC, 20560, USA
  • Steven J. Hinds New Brunswick Department of Natural Resources and Energy Development, Fredericton, New Brunswick E3B 5H1, Canada
  • Adrian F. Park New Brunswick Department of Natural Resources and Energy Development, Fredericton, New Brunswick E3B 5H1, Canada
  • John H. Calder Department of Geology, Saint Mary’s University, Halifax Nova Scotia B3H 3C3, Canada
  • Hillary Maddin Department of Earth Sciences, Carleton University, Ottawa, Ontario K1S 5B6, Canada
  • Martin Montplaisir Visual Q Technologies, Moncton, New Brunswick E1E 2K2, Canada




A new specimen of Batrachichnus salamandroides was recovered from a recently discovered fossil-bearing
site situated along the southern shore of Grand Lake, New Brunswick, among a diverse ichnofaunal assemblage
from the Middle Pennsylvanian (upper Bolsovian; lower Moscovian), upper Minto Formation. The identity of
the tracemaker of this ichnogenus is reinterpreted as a composite of various late Paleozoic tetrapod taxa, based
on 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 not
limited solely to a temnospondyl tracemaker, as previously interpreted, and that some “microsaurs” should also
be considered among tracemaker candidates for this ichnotaxon.


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How to Cite

Allen, L. F., Stimson, M. R., King, O. A., Norrad, R. E., Lucas, S. G., Mann, A., Hinds, S. J., Park, A. F., Calder, J. H., Maddin, H., & Montplaisir, M. (2022). A Batrachichnus salamandroides trackway from the Minto Formation of central New Brunswick, Canada: implications for alternative trackmaker interpretations. Atlantic Geoscience, 58, 239–260. https://doi.org/10.4138/atlgeol.2022.010