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History
- Received 14 March 2001
- Accepted 1 May 2001
- Published 1 September 2001.
Copyright & Usage
© 2001 The Geological Society of London
Author Information
- D. J. BEERLING1,
- B. H. LOMAX1,
- G. R. UPCHURCH Jr2,
- D. J. NICHOLS3,
- C. L. PILLMORE3,
- L. L. HANDLEY4 and
- C. M. SCRIMGEOUR4
- 11Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK (e-mail: d.j.beerling@sheffield.ac.uk)
- 22Department of Biology, SW Texas State University, San Marcos, TX 78666, USA
- 33U.S. Geological Survey, Denver, Colorado 80225, USA
- 44Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, UK