MacLeod (2014)
Also: MacLeod 2014
The geological extinction record: History, data, biases, and testing
MacLeod, N. (2014). The geological extinction record: History, data, biases, and testing. Geological Society of America Special Papers, 505, 1-28. Link to abstract
DOI: 10.1130/2014.2505(01)
References
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.