Nel, A. & de Ploeg, G. & Dejax, J. & Dutheil, D.B. & de Franceschi, D. & Gheerbrant, E. & Godinot, M. & Hervet, S. & Menier, J.-J. & Auge, M. (1999)
An exceptional Sparnacian locality with plants, arthropods and vertebrates (Earliest Eocene, MP7): Le Quesnoy (Oise, France). Comptes Rendus de l'Académie des Sciences, Series IIA – Earth and Planetary Science, 329(1), 65–72
DOI: 10.1016/S1251-8050(99)80229-8