Note: This historical image is not a factually accurate paleontological restoration.
Reason: 4 pairs of postcheliceral appendages (5 pairs in eurypterid); 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.
描述Pterygotus Anglicus.jpg
Fig. 65.—Pterygotus anglicus, viewed from the under side, reduced in size, and restored. c c, The feelers (antennæ), terminating in nipping-claws; o o, Eyes; m m, Three pairs of jointed limbs, with pointed extremities; n n, Swimming-paddles, the bases of which are spiny and act as jaws. Upper Silurian, Lanarkshire. (After Henry Woodward.)
== Summary == {{Information |Description=Fig. 65.—Pterygotus Anglicus, viewed from the under side, reduced in size, and restored. c c, The feelers (antennæ), terminating in nipping-claws; o o, Eyes; m m, Three pairs of jointed limbs, with pointed extre