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Pecopteris polimorpha mm 128 Fern Fossil Leaf Carboniferous (3)

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Origin : Les Mines (France) - Monteceau Formation

Geological era : Upper Carboniferous (Stefanian)

Age : 310 million of years

Size : 530 gr - cm 12.8 x 9.4 x 3

Leaves of Fossil Fern matrix cm 12.8 x 9.4 x 3 - gr 530
Pecopteris polymorpha Fossil Fern of Carboniferous.
The Fossil Fern you will receive is the one of the Photo.

The Montceau-les-Mines Lagerstätte (Late Stephanian, Late Carboniferous) is located northeast of the French Massif Central. Situated at equatorial latitudes during the Pennsylvanian, this Lagerstätte, probably a freshwater environment, preserves a rich and diverse flora (lycopsids, sphenopsids, ferns, pteridosperms, and cordaites) and fauna (bivalves, annelids, crustaceans, myriapods, insects, chelicerates, myxinoids, actinopterygians, sarcopterygians and tetrapods). These exceptionally preserved fossils can be found either flattened in shales or three-dimensionally preserved in sideritic nodules. The fossils from the nodules are exceptional for at least two reasons: the absence of major disarticulation of their body structure and the preservation of soft parts and extremely fragile cuticular structures. Such preservation was made possible by the combination of several factors: rapid burial in fine anoxic mud, early siderite precipitation (inducing the nodule formation) and phosphatization of cuticles and soft-bodied features.

Pecopteris is a very common form genus of leaves. Most Pecopteris leaves and fronds are associated with the marattialean tree fern Psaronius. However, Pecopteris-type foliage also is borne on several filicalean ferns, and at least one seed fern. Pecopteris first appeared in the Devonian period, but flourished in the Carboniferous, especially the Pennsylvanian. Plants bearing these leaves became extinct in the Permian period.
Pecopteris is derived from the Greek pekin, (to comb), and pteris, (fern).This is because the leaflets of Pecopteris fronds are arranged like the teeth on a comb.
As of 1997, there have been 250-300 species assigned to Pecopteris.
In Brazil, fossil of form genus Pecopteris was located in outcrop Morro Papalé in the city of Mariana Pimentel. They are in the geopark Paleorrota in Rio Bonito Formation and date from Sakmarian in Permian.

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