Psaronius is an extinct genus marattialean tree fern which grew to 10m in height, and is associated with leaves of the organ genus Pecopteris and other extinct tree ferns. Originally, Psaronius was a name for the petrified stems, but today the genus is used for the entire tree fern.

Jan 1, 2000 · The genus Psaronius, originally introduced by Cotta (1832) for permineralized trunk segments, is used today to refer to the entire plant. Psaronius is considered as having upright, unbranched stems that reach a basal diameter of more than 80 cm (Sterzel, 1887).

The genus of extinct ferns Psaronius, found from the Carboniferous Period through the Permian Period (roughly 358.9 million to 251.9 million years ago), is considered to be either a member of the Marattiaceae or very closely related to it.

Mar 14, 1977 · histologically preserved Psaronius and from North America the first reported monocyclic psaronii. They provide the first clear anatomical evidence for relating Megaphyton specimens with monocyclic anatomy and distichous leaf arrange- ment to the Marattiales and to the early evolu- tionary history of Psaronius. As a result of

Jan 31, 2000 · The role of Psaronius tree ferns was to provide a frequently-used substrate for colonisation by other plants. The massive root mantles protected different developing plants, and they may have...

Psaronius is a genus of extinct giant tree ferns. They grew between 10-15 meters in length and possessed helically arranged leaves between 2-3 meters long and exhibited large, vertically elongated leaf scars on the apex of their central strand (Steur 2008, Rothwell 1982).

Nov 1, 2021 · Permineralized stems (Psaronius) have a lower diversity (3 species), which is probably caused by 4 factors. This paper investigates the taxonomic diversity of marattialean stems from the family Psaroniaceae preserved in-situ within the Wuda Tuff Flora.

European species of Psaronius are Permian, it is possible that these were also, although some species have been described from the Carboniferous. One specimen (no. 32) was collected by Mr. CHASE in Stark County, Illinois, and this may represent a Carboniferous species. The material was obtained from Mr. CHASE by Dr. A. C.

Stimulated by new observations, this contribution presents a summary of the current knowledge of diVerent plants that grew closely associated with Psaronius trunks in the Early Permian petrified forest of Chemnitz (Saxony, Germany). The role of Psaronius tree ferns was to provide a frequently-used substrate for colonization by other plants.

Psaronius species grew over the whole of the Northern Hemisphere, were abundant in western and central Europe. The whole family Psaroniaceae reached its greatest development during the Upper Carboniferous and Lower Permian, i.e. before 325–251 million years ago.