- 1976Professor Of Biology
- 2001[position unknown]
- 1988[position unknown]
- 1992[position unknown]
- 1988[position unknown]
- 1988[position unknown]
- 1976Associate Professor Of Biology
- 1976[position unknown]
- 1989[position unknown]
- 1909Tutor In Natural History
- 1988[position unknown]
- 1989[position unknown]