Triassic trace fossils from lacustrine shoreline deposits of the Passaic formation, douglassville, pennsylvania

  title={Triassic trace fossils from lacustrine shoreline deposits of the Passaic formation, douglassville, pennsylvania},
  author={R. Metz},
  pages={253 - 266}
Lake‐margin deposits of the Late Triassic Passaic Formation, Douglassville, Pennsylvania, have yielded a moderate variety of trace fossils. The greatest diversity and abundance of trace fossils occurs on the sole of a thin gray claystone overlain and underlain by gray siltstones. Specimens of Cochlichnus anguineus, Helminthoidichnites tenuis, Helminthopsis hieroglyphica, Treptichnus pollardi, and paired trails reflect simple, unspecialized, horizontal grazing as well as feeding traces under… Expand
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