Note: This historical image is not a factually accurate paleontological restoration.
Reason: Erettopterus with multisegmented peduncle of chelicerae (unsegmented according to Selden 1984).
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.