Underwood, Charlie J. and Mitchell, S.F. (2004) Sharks, bony fishes and endodental borings from the Miocene Montpelier Formation (White Limestone Group) of Jamaica. Cainozoic Research 3 , pp. 157-165. ISSN 1570-0399.

Underwood, Charlie J. and Mitchell, S.F. (2000) Serratolamna serrata (Agassiz) (Pisces, Neoselachii) from the Maastrichtian (Late Cretaceous) of Jamaica. Caribbean Journal of Earth Science 34 , pp. 25-30. ISSN 0799-0901.

Mitchell, S.F. and Underwood, Charlie J. (1999) Lithological and faunal stratigraphy of the Aptian and Albian (Lower Cretaceous) of the Type Speeton Clay, Speeton, N.E. England. Proceedings of the Yorkshire Geological Society 52 (3), pp. 277-296. ISSN 0044-0604.

Underwood, Charlie J. and Mitchell, S.F. (1999) Albian and Cenomanian selachian assemblages from North East England. Special Papers in Palaeontology 60 , pp. 9-59. ISSN 0038-6804.

Underwood, Charlie J. and Mitchell, S.F. and Veltkamp, K.J. (1999) Microborings in mid Cretaceous fish teeth. Proceedings of the Yorkshire Geological Society 52 , pp. 269-274. ISSN 0044-0604.

Underwood, Charlie J. and Mitchell, S.F. and Veltkamp, K.J. (1999) Shark and ray teeth from the Hauterivian (Lower Cretaceous) of north-east England. Palaeontology 42 (2), pp. 287-302. ISSN 0031-0239.