English: A drawing of Chelediscus acifer, based on two photographs as printed in the Treatise on Invertebrate Paleontology, Part O, Arthropoda 1, Revised, Trilobita, vol. 1 (1997), figure 245,1a/b. Specimens from the upper Protolenus-zone, Purley Shale, England (Warwickshire).
Cephalon based on a paratype, pygidium based on the holotype.
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.
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.