Kin, A., and B. Błażejowski. “A New
Trimerocephalus
Species (Trilobita, Phacopidae) from the Late Devonian (Early Famennian) of Poland”.
Zootaxa
, vol. 3626, no. 3, Mar. 2013, pp. 345–355, doi:10.11646/zootaxa.3626.3.3.