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 sp. OPC 9000-7957 - Close-upClose-up color photograph with scalebar of the fern pinnae/leaves of a Pecopteris from Rhode Island that "metamorphosed" or stretched by tectonic movement of rocks.

Pecopteris is a fern from the order Pteridophyta, which no longer exists today. This plant thrived almost 323 million years ago, during the Pennsylvanian period, a time when the forests were dense, damp and best known for their coal-producing qualities.

Pecopteris Bucklandi, Pecopteris oreopteridis, and Pecopteris Cistii, are closely allied species, which it is difficult to separate, especially from fragmentary specimens. The first has large, comparatively short ultimate pinnae, with narrow longer pinnules, lanceolate into a narrowly obtuse acumen, the ultimate leaflet is triangular, acute.

Pecoteris sp. is the foliage of a tree fern. Pecopteris grew on Psaronius which was one of the most common fossil tree ferns. Psaronius reached height of about ten meters (32 feet) and resembled a modern palm tree. Although common througout much of the late Paleozoic, this plant was most abundant in the Late Pennsylvanian and Permian.

Excellent fossils are generally easy to collect from layers of thinly laminated shales, which split open with the tap of a chisel or a splitting hammer. Some entire families of plants are now extinct, such as Pecopteris.

Aug 1, 2022 · Pecopteris (Brongniart) Sternberg is a morphological fossil genus with a cosmopolitan distribution during the Permo–Carboniferous, of which most species belong to the marattialean and or “filicalean” ferns or less frequently to pteridosperms. The taxonomic affinity is uncertain unless distinctive reproductive organs or rachis anatomy is ...

Jul 1, 2022 · Pecopteris (Brongniart) Sternberg is a morphological fossil genus with a cosmopolitan distribution during the Permo–Carboniferous, of which most species belong to the marattialean and or...

These fossils formed from a large flooding event that rapidly buried organisms, allowing for soft parts to be preserved.

Aug 13, 2020 · Petalodus has several distinct species in the genus, but many of these are now thought to be different teeth from different portions of the jaw. The negative or impression of Pecopteris. This appears to be the end of a branch. The raised positive of Pecopteris. The red comes from trapped sediment that is easily brushed away.