Literature
Authors(s) Briggs, D.E.G., R.A. Fortey & E.N.K. Clarkson
Year 1988
Title Extinction and the fossil record of the arthropods. 9. In: G. Larwood (ed.), Extinction and survival in the fossil record. Syst. Ass. Spec., 34: 171-209, figs 1-12.