Note: This historical image is not a factually accurate paleontological restoration.
Reason: Lacking features (e.g. eyes; 5 pairs of biramous cephalic appendages; paired dorsal spines) revealed by Aria & Caron 2017.
You may ask further questions about the accuracy of this image at the image review page of Wikiproject Palaeontology on the English Wikipedia. Note that this image may be appropriate to illustrate obsolete paleontological views.