Author R.D.C. Bicknell P.M. Smith L. Amati M.J. Hopkins Bicknell, R.D.C., Smith, P.M., Amati, L., Hopkins, M.J., 2025. Abnormal trilobites from the Silurian and Devonian of Europe. Acta Palaeontologica Polonica 70, 205–212. doi:10.4202/app.01229.2024