_Sphenophyllum_ ⅗×
_Lepidostrobophyllum_ ⅗×
_Annularia_ ⅗×
_Sphenophyllum_ 1×
_Lycopodites_ ⅗×
_Cordaites_ ⅗×
_Asterophyllites_ ⅓×
Fossils in concretions also have been collected from a shaly limestone
at the south end of the Kankakee River bridge along the Grundy and Will
county line.
Bureau County
Some 40 miles downstream from Morris on the Illinois River, plant
fossils have been discovered in waste from the Spring Valley Coal Co.
mine 1. They also are found in black shale below the LaSalle Limestone
in a small gully in the southwest part of town, but at neither place are
they plentiful.
Knox County
A notable number and variety of well preserved plant fossils have been
produced from a locality along Court Creek in East Galesburg. The Rock
Island (No. 1) Coal is mined in the area and the fossils appear to have
come from the shale overlying it.
[Illustration: uncaptioned]
Fossil plants also have been found in shales above the Colchester (No.
2) Coal in the vicinity of DeLong and with the Herrin (No. 6) Coal in
mines southeast of Victoria.
Mercer and Warren Counties
In northern Warren and southern Mercer Counties the sandstone underlying
the Rock Island (No. 1) Coal is termed the “Stigmarian” sandstone
because of numerous siliceous casts found in the bed. Many of the
fossils have been collected from an old mine dump and from ravines along
the Edwards River northeast of Aledo.
A number of representatives of _Sphenophyllum_, _Neuropteris_, and
_Annularia_ have been collected from ironstone concretions occurring in
shale that overlies the Colchester (No. 2) Coal about three miles
southwest of Alexis. They were found in a gully about a third of a mile
southeast of Center School.
[Illustration: uncaptioned]
[Illustration: _Plate 3_]
_Pecopteris_ 1×
_Ptychocarpus_ ⅗×
_Pecopteris_ ⅗×
_Mariopteris_ ⅗×
_Asterotheca_ ⅗×
_Spiropteris_ ⅗×
_Pecopteris_ ⅗×
In the same general area but about three miles due south of Alexis,
fossil plants also may be found in the clay pits of the Hydraulic-Press
Brick Company and the Northwestern Clay Manufacturing Company.
Fulton County
Although there are numerous isolated occurrences of plant fossils
throughout the extensive strip mines and outcrops in Fulton County, no
exceptionally good collecting localities have been discovered.
Fern and cordaitean leaves have been collected along Mill Creek about a
mile northeast of Pleasantview where the fossils occur in the shale
overlying the Babylon Coal. In the same general area, impressions and
casts of _Stigmaria_, _Lepidodendron_, and _Cordaites_ have been found
in the Babylon Sandstone.
[Illustration: uncaptioned]
Three miles north of Pleasantview, a quarter of a mile northwest of
Union School, several species of leaves have been collected from the
Browning Sandstone where it is exposed in a roadcut.
Public-domain text, read in full here on John Shaqi.
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