1.4" Fossil Horsetail (Annularia) In Ironstone - Illinois

This is a 1.4" fossil horsetail (Annularia) stalk from the Carbondale Formation near Coal City, Illinois. This specimen is a section of stalk with three, leaf whorls.

Annularia is an extinct genus of plant, closely related to modern horsetails, from the Late Carboniferous, Pennsylvanian aged forests.
DETAILS
SPECIES
Annularia sphenophyllites
LOCATION
Coal City, Illinois
FORMATION
Carbondale Formation
SIZE
1.4" stalk, 2.1 x 1.9" nodule
ITEM
#120996
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