Manuscript entitled, "Fossil Flora and Fauna of the Pennsylvanian Period, Will County, Illinois"
by George Langford (1876-1964)
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Part I. The Fossil Flora
The Index to the Fossil Flora is here.
Page
Topic
16 - 25 Calamites.
26 -32 Lepidodendron.
33 - 40 Lepidophloios.
41 - 42 Ulodendron.
43 Asolanus.
44 - 45 Cordaites.
46 Roots.
47 - 48 Megaphyton and Caulopteris.
49 - 50 Pecopterid pinnules.
51 - 56 Asterotheca, Acitheca and Pecopteris.
57 Crossotheca.
58 - 61 Neuropteris.
62 Cyclopteris.
63 Linopteris, Neuropteris and Odontopteris examples.
Page
Topic
64 - 65 Odontopteris.
66 Alethopteris and Desmopteris.
67 Oligocarpia, Alloiopteris and Corynepteris examples.
68 - 70 Mariopteris.
71 - 73 Sphenopteris.
74 Eremopteris, Renaultia, Rhodea, Diplothemnia and Zeilleria ... and parasites.
75 - 76 Hymenotheca and Radstockia.
77 Aphlebia and Rhaeophyllum.
78 Palaeoxyris.
79 Trigonocarpus.
80 Cordaicarpus.
81 Colpospermum, Samaropsis, Holcospermum, Rhabdocarpus and Codospermum.
82 - 83 Stephanospermum.
84 - 85 Neuropterocarpus.

Part II: The Fossil Fauna
The index to the Fossil Fauna is here.
Page
Topic
86-87
Animals of the Coal; and Coal Flora and Fauna Publications.
88
Ostracoda, Aviculopectan mazonensis, and Gyromices ammonis.
89
Schizopod, Amphipod, Myriapod, and odd creatures.
90-91
Euphoberia, including E. armigera, E. tracta, E. hystricosa, and an Annelid, Nereis.
92-93
Euphoberia; Freshwater bivalves, Anthrapalaemon gracilis ... and Euproops danae.
94
More Euproops danae and a GL sketch of the modern horseshoe crab, Limulus.
95
Xiphosura, including Streptocyclus langfordi, Liomesaspes laevis, Euproops lavicula, and E. thompsoni.
96-97
Arthropleura parts found by Eugene Richardson & GL in 1952 & by John L. McLuckie in 1953.
98-99
Eurypterids, especially Adelophthalmus mazonensis.
100
Adelophthalmus mazonensis (Lepidoderma mazonensis).
101
Spiders, introduction.
102-103
Architarbus rotundatus.
104
Architarbus rotundatus and Paratarbus carbonarius.
105
Orthotarbus robustus, Eophrynus ensifer, Curculioides, and Adelophthalmus mazonensis.
106
Discotarbus deplanatus, Ootarbus ovatus, Polyochera glabra, and Orthotarbus robustus.
Page
Topic
107
Ootarbus pulcher.
108
Orthotarbus robustus, Metatarbus triangularis, Discotarbus, Ootarbus and Architarbus rotundatus.
109
Ootarbus ovalis, O. pulcher, Discotarbus, Curculioides gracilis, and Paratarbus carbonarius.  The last two are new species and holotypes.
110-112
Eophrynus ensifer. Petrunkevitch.
113
Scorpions: Geralinura gigantea and Eoscorpius carbonarius.
114-115
Winged Insects & Insect Wings.
116
Giant Dragon-Fly; Coal Measures of Commentry, France.
117
Wings: Thesonura americana Carpenter, Heterologus langfordorum Carpenter, Syntoptera schucherti Handlirsch, and Lithoneura mirifica Carpenter, three new species, a new genus & three holotypes.
118
Insect wing & winged insects, including Thesoneura americana and Teneopteron mirabile, three new species, two new genus & an holotype.
119
Insect fossils collected by Violetta (Mrs. Robert) Whitfield.
120
Fish, including teeth, scales (Rhizodus reticulatus) and a complete fossil fish.
121
Elonichthys hypelipsis Hay.
122
Elonichthys peltigerus and Elonichthys.
123-124
An amphibian - Phlegethontia mazonensis.
125-126
Amphibamus grandiceps Cope and Micerpeton caudatum.

Notes:
(1) I made some of these links go to secondary index pages so that there wouldn't be too much information on any one webpage.
(2) It's generally not possible to resolve the fine structure of the fossil flora in the full-page index copies of most of the images, so I've made it possible to view the images at greater resolution by right-clicking on them. 
(3) In general, most of the high resolution scans are at 300 dots per inch, three times the resolution of the full-page images. 
Some of the very small fossils were scanned at 600 dots per inch.
(4) I made every effort with the flatbed scanner (Epson Perfection 2400) and with the image editor (PhotoshopElements) to maximize the visibility of the fine structure in the original photographic prints by avoiding whited-out or all-black areas after my adjustments to the contrast and brightness.  As a result, some of the background paper in the scans now has odd contrast.
(5) I edited out overlapping information from the high-resolution scans and filled in missing letters hidden by the corner mounts, thereby avoiding damage to the prints from removing them from the mounts.
(6) In the many years since this manuscript  was prepared by George Langford, Sr., notes on the presence of other collections have been prepared by others; and the fossils of the Mazon Creek collection at the Illinois State Museum have been scanned and digitized and are available in an on-line database.  I met Brian Bisbee at the museum while he was actually in the process of doing this. Some of the very same fossils as GL prepared and photographed for this manuscript have been scanned into that database.
George Langford (III), Editor, April 2010.