entitled, Fossil Flora and Fauna of
the Pennsylvanian Period, Will County, Illinois by George Langford (1876-1964) Return
Architarbus rotundatus and
Paratarbus carbonarius, page 104. Note:
of the original page 104 is here. The original page was letter size
but the image may have been cropped slightly.
To view any of these images at
high resolution (300 dots per inch
instead of 100 as on the full-page images) right-click on the image and
image. Links in
the top row lead to 600 dpi images of the respective spider fossils.