Non-marine arthropod traces from the subaerial Ordovician Borrowdale Volcanic Group, English Lake District

  title={Non-marine arthropod traces from the subaerial Ordovician Borrowdale Volcanic Group, English Lake District},
  author={E. W. Johnson and Derek E. G. Briggs and Roger J. Suthren and J. L. Wright and Steve Tunnicliff},
  journal={Geological Magazine},
  pages={395 - 406}
Abstract Arthropod trace fossils are described from the Borrowdale Volcanic Group, a sequence otherwise devoid of faunal evidence. Two forms, both made by the same probably myriapod-like organism, are assigned to the ichnogenera Diplichnites and Diplopodichnus. The lithologies preserving the trace fossils are non-marine and may have been deposited in a freshwater lacustrine environment; some of the traces were probably made in temporarily emergent conditions. The change from one form of trace… 
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