Note: This historical image is not a factually accurate paleontological restoration.
Reason: Outdated reconstruction on great appendages (fingers originated from articulated podomeres instead of radiated from one point) and cephalic region ("face" in front of the head shield is not evident).
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.