''Protolepidodendropsis'' is a genus of lycopsid known from fossil forests dating from early Late Devonian strata in Svalbard. Fossil forests of ''Protolepidodendropsis pulchra'' have been recovered from

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates ...

and mudstone of the Plantekløfta Formation, estimated to be around 380 million years old. The plants have trunks of up to width with flanged bases up to in diameter. Their height is unknown but estimated to be around 2 to 4 m. They grew apart in wet soils.

References

Devonian plants Prehistoric lycophytes Prehistoric lycophyte genera {{devonian-plant-stub