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Didymograptus

Didymograptus
Temporal range: Middle Ordovician
~478–443 Ma
Didymograptus murchisoni small.jpg
Didymograptus murchisoni, Wales
Scientific classification
Kingdom:
Phylum:
Class:
Genus:
Didymograptus

McCoy 1851
  • D. artus
  • D. euodus
  • D. gracilis
  • D. murchisoni
  • D. nicholsoni

Didymograptus is an extinct genus of graptolites with four rows of cups. They lived during the Middle Ordovician,[1] to Late Ordovician.[2]

Distribution

Fossils of Didymograptus have been found in Argentina, Australia, Bolivia, Canada (Northwest Territories, Quebec, Yukon, Newfoundland and Labrador), Chile, China, Colombia (Tarqui, Huila),[3] the Czech Republic, Estonia, France, Iran, Morocco, New Zealand, Norway, Peru, Portugal, the Russian Federation, Saudi Arabia, Spain, Sweden, the United Kingdom, the United States (Alaska, California, Idaho, Nevada, New York, Utah), and Venezuela.[2]

References

  1. ^ Palmer, Douglas; et al. (2009). "Ordovician". Prehistoric Life: the Definitive Visual History of Life on Earth (first American ed.). New York City: DK Publishing. p. 89. ISBN 978-0-7566-5573-0.
  2. ^ a b Didymograptus at Fossilworks.org
  3. ^ Moreno et al., 2008, p.10

Bibliography



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