Alethopteris Fern Fossil

Common

Date

c. 310 million years BP

Object Type

Fossil

Medium / Material

Carbonised plant impression in siltstone

Production Place

St. Clair, Schuylkill County, Pennsylvania, USA

Dimensions

H 150 × W 110 × D 15 mm · 420 g

Condition

Good

Pinnate fern-like fronds preserved as a carbonised film on a split siltstone slab from the coal measures of Pennsylvania.

Materials & Techniques

Siltstone with carbonaceous residue

Location

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