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Very Detailed Annularia in a Split Pair Concretion
Stock Number  FPFMO705
EXTINCTIONS Choice

Name:   Annularia Concretion
Age:  Pennsylvanian
Formation:  Braidwood Formation
Location:  Johnson County, Missouri
Size:  Concretion is 2.1 inches long

Here is a very nice fossil plant from Missouri. This is a large Annularia sp. from the Pennsylvanian. Annularia represent the leaf whorls of the Calamites plant. This fossil plant is wonderfully preserved in a concretion. Both halves of the concretion are present, so both part and counterpart of the fossil are intact. The plant exhibits very fine detail. The central stem of the plant is quite visible, and the sunburst-like whorl of long, linear leaves is clearly defined. The dark brown fossil contrasts beautifully with the orangish matrix. This is an excellent specimen of an Annularia whorl. from the Coal Age.