User:Stocksdale/sandbox

Stocksdale/sandbox; Temporal range: Late Carboniferous–Permian PreꞒ Ꞓ O S D C P T J K Pg N
	A transverse section through a Psaronius stem. ~12cm across.
	An equivalent section through a modern tree fern. ~6cm across.
Scientific classification
Kingdom:	Plantae
Division:	Pteridophyta
Class:	Marattiopsida
Order:	Marattiales
Family:	Psaroniaceae
Genus:	Psaronius

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Mississipian

Pennsylvanian

Rhythmites

Cyclothems

glaciers

crinoids

Blastoid

sharks

edestus

horseshoe crab

dragonfly

Lepidodendron

Psaronius

Medullosales

Macroneuropteris Alethopteris

Sphenopteris

Lyginopteris