English: drawing of a Condylopyge cf regia trilobite, Order Agnostida, Family Condylopygidae, from photographs published by Rushton, A.W.A. and T. Weidner (2007). The Middle Cambrian paradoxidid trilobite Hydrocephalus from Jämtland, central Sweden. Acta Geologica Polonica 57(4):391-401, cephalon based on NHM It27187(1) as figured in plate 5.1; pygidium based on Fig. 2.b, of SGU 9477, as collected by Westergard from Brunflo station.
Cephalon and pygidium are drawn from separate photographs. The relative size of these parts and the distance between them are best guesses by the artist, but not necessarily correct to life.