Manuscript entitled, Fossil Flora and Fauna of the Pennsylvanian Period, Will County, Illinois
by George Langford (1876-1964)
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Discotarbus deplanatus, Ootarbus ovatus, Polyochera glabra, and Orthotarbus robustus, page 106.
Note: the scan of the original page 106 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 select view image.
Link on right-most Orthotarbus robustus title leads to 600 dpi image of just the spider fossil.  This specimen is now
in the Illinois State Museum Mazon Creek database as No. 14867 - GL,III, ed.]
Discotarbus deplanatus.
Discotarbus deplanatus, GL photograph, page 106
Unknown spider.
Misc spider, GL photograph, page 106
Ootarbus ovatus.
Ootarbus ovatus, GL photograph, page 106
Ootarbus
Ootarbus, GL photograph, page 106
 Polyochera glabra.
Polyochera glabra, GL photograph, page 106
Orthotarbus robustus
Orthotarbus robustus, GL photograp, page 106
Orthotarbus robustus
Orthotarbus robustus, GL photograph, page 106
Orthotarbus robustus No.14867
Orthotarbus robustus No. 14867, GL photograph, page 106