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I'm looking for opinions on this one..... I consulted a VERY old volume and found what I believe is a match... ESPECIALLY since the book's diagram was from my immediate area of Johnstown, Pennsylvania USA. This is from my Wednesday Feb. 21 hunt. The data on the fossil: Rt 56 Bypass, Johnstown, Pennsylvania, USA Pennsylvanian Period (290-330 Million Years Ago) Fern leaves called Pecopteris grew abundantly in the coal swamps of the Carboniferous Period. These leaves dropped off of a 35 foot fern tree called “Psaronius“, one of the most common Paleozoic types. With its sparse and expansive branches, it resembled the modern day palm tree. It produced as many as 7000 spores on the underside of its leaves. These samples are well preserved in gray coal shale as many Carboniferous leaf fossils. (From A Dictionary of the Fossils of Pennsylvania VOL II:) Pecopteris velutina. Les. Geol. Pa. 1858, p. 866, pll. 12, fig. 3, 3 a; 3.from Johnstown, Cambria Co., Pa., venation not visible under the thick skin; but in a specimen afterwards obtained at Cannelton, Beaver Co., Pa., also with a thick shining skin some of the leaflets show the style of venation.Lesq.—Kittanning coal. XIII. 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. Kingdom: Plantae Phylum: Pteridophtya (meaning vascular plant with transport system for nutrients and fluids) Class: Filicopsida (Ferns which reproduce with spores) Order: Marattiales (primitive ferns) Family: Marattiaceae Genus: †Pecopteris Species: †velutina
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