5.2" Pennsylvanian Fossil Fern and Horse Tail Plate - Kentucky

This is a beautiful fossil flora plate that is littered with Neuropteris fossils and a couple Calamites stalks. It was collected from the Breathitt Formation of Leslie County, Kentucky. This formation is a part of the Late Carboniferous, Pennsylvanian age forests that formed the coal shales of Kentucky and Ohio.

Neuropteris is an extinct genus of fern that reproduced from seed as opposed to sporophyte reproduction of most modern ferns. As with most seed ferns, Neurodontopteridaceae grew in tree form.

Calamites is a genus of extinct arborescent (tree-like) horsetails to which the modern horsetails are closely related. Unlike their modern cousins, these plants were medium-sized trees, growing to heights of more than 30 meters (100 feet). They were components of the understories of coal swamps of the Carboniferous Period.

Calamanites sketch from the manuscript Fossil Flora and Fauna of the Pennsylvanian Period, Will County, Illinois
Calamanites sketch from the manuscript Fossil Flora and Fauna of the Pennsylvanian Period, Will County, Illinois


The trunks of Calamites had a distinctive segmented, bamboo-like appearance and vertical ribbing. The branches, leaves and cones were all borne in whorls. The leaves were needle-shaped, with up to 25 per whorl.

The stems of modern horsetails are typically hollow or contain numerous elongated air-filled sacs. Calamites was similar in that its trunk and stems were hollow, like wooden tubes. When these trunks buckled and broke, they could fill with sediment. This is the reason pith casts of the inside of Calamites stems are so common as fossils. Calamites would have been covered with a thin outer bark but this is almost never preserved.


Comes with an acrylic display stand.

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DETAILS
SPECIES
Neuropteris sp. & Calamites sp.
LOCATION
Leslie County, Kentucky
FORMATION
Breathitt Formation
SIZE
5.2 x 3.1 rock
CATEGORY
ITEM
#224651
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