Richard John Aldridge (1945 – 4 February 2014) was a British palaeontologist who was the Bennett Professor of geology at the University of Leicester.
Aldridge's career began at Southampton University before moving to a temporary lectureship at University College London and then to Nottingham University where he remained until 1989 when, during the Oxburgh Review of Earth Sciences, he moved to his current institution, the University of Leicester, where he served two terms as Head of Department. Aldridge's research has been focused primarily on the conodont biostratigraphy  and palaeobiology and one of his seminal contributions has been to uncover the vertebrate nature of the long-enigmatic conodont animal, principally in collaboration with Derek Briggs and Euan Clarkson. This was achieved through careful analysis of skeletal remains, but also through analysis of rare soft tissue remains of conodonts. This led naturally to Aldridge's current research focus which is fossil Lagerstätten. Aldridge was awarded the Pander Medal of the Pander society in 2006. He was President of the Palaeontological Association and of the British Micropalaeontological Society (1995-1998).
- ^ "Professor Richard Aldridge — University of Leicester". .le.ac.uk. Retrieved 2014-05-13.
- ^ "Richard John Aldridge 1945 - 2014". Geolsoc.org.uk. 2014-02-04. Retrieved 2014-05-13.
- ^ Aldridge, R. J. 1972. Llandovery conodonts from the Welsh Borderland. Bulletin of the British Museum (Natural History), Geology 22: 125-231
- ^ Aldridge, R. J. 1975. The stratigraphic distribution of conodonts in the British Silurian. Journal of the Geological Society, London 131: 607-618
- ^ Briggs, D. E. G., Clarkson, E. N. K. and Aldridge, R. J. 1983. The conodont animal. Lethaia 16: 1-14
- ^ Aldridge, R. J., Briggs, D. E. G., Smith, M. P., Clarkson, E. N. K. and Clark, N. D. L. 1993. The anatomy of conodonts. Philosophical Transactions of the Royal Society of London, Series B 340: 405-421
- ^ Donoghue, P. C. J., Forey, P. L. and Aldridge, R. J. 2000. Conodont affinity and chordate phylogeny. Biological Reviews 75: 191-251
- ^ Hou, X. G., Aldridge, R. J., Bergström, J., Siveter, D. J., Siveter, D. J. and Feng, X. H. 2004. The Cambrian fossils of Chengjiang, China: the flowering of animal life. Blackwell Science Ltd, London