Literature and Web Links

Books

• Allaby, A. and Allaby, M., 2003 (2nd ed). Oxford dictionary of earth sciences. Oxford University Press.
• Clarkson, E.N.K., 2005 (4th ed). Invertebrate palaeontology and evolution. Blackwell Science. pg. 318-347.

Links

• www.graptolite.net
• www.graptolites.co.uk
• www.ucmp.berkeley.edu

Author: LShychoski
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