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The Dresbachian is the lower stage of the Late or Upper Cambrian in North America, equivalent to the Chinese Gushanian which spans about 4 million years, from 501 to about 497 m.y.a. The term comes from the town of Dresbach which is located in southeastern Minnesota on the Mississippi River.

The Dresbachian overlies the Middle Cambrian Albertan Series, and is the lowest stage of the Upper Cambrian Croixan series, followed by the Franconian.

ReferencesEdit

  • Chen Jun-yuan & Teichert C, 1983; Cambrian Cephalopods, Geology Vol 11, pp647-650, Nov 1983
  • Flower R.H.1964, The Nautiloid Order Ellesmerocerida (Cephalopoda) Menoir 12, New Mexico Bureau of Mines and Mineral Resources, Socorro, NM
  • Harland,W. B. et all 1990. A Geologic Time Scale 1989. Cambridge University Press, Cambridge . Ref in Paleobiology Database on line.
  • Moore, Lalicker, and Fischer 1952; Invertebrate Fossils; McGraw-Hill; fig 1-17.
  • Geowhen database. [[1]]
Mantell's Iguanodon restoration

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