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Boomer, I., Lord, A.R., Page, K.N., Bown, P.R., Lowry, F.M.D. and Riding, J.B. (2009) The biostratigraphy of the upper Pliensbachian-Toarcian (Lower Jurassic) sequence at Ilminster, Somerset. Journal of Micropalaeontology, 28 (1). pp. 67-85. ISSN 0262-821X (Print), 2041-4978 (Online) (doi:10.1144/jm.28.1.67)

Kenned, W.J., Gale, A.S., Bown, P.R., Caron, M, Davey, R.J., Gröcke, D and Wray, D,S. ORCID: https://orcid.org/0000-0002-0799-2730 (2000) Integrated stratigraphy across the Aptian-Albian boundary in the Marnes Bleues, at the Col de Pré-Guittard, Arnayon (Drôme), and at Tartonne (Alpes-de-Haute-Provence), France: a candidate Global Boundary Stratotype Section and Boundary Point for the base of the Albian Stage. Cretaceous Research, 21 (5). pp. 591-720. ISSN 0195-6671 (doi:10.1006/cres.2000.0223)