Calamite tree seed fern white fossil While they might not be

While they might not be perfect

First appearing in the fossil record around11 million years ago

the Stegodon is thought to have become extinct in the late Pleistocene

Gerastos Tuberculatus Marocensis trilobite

near Antwerp

Calamite tree seed fern white fossil While they might not beFossilised leaves from the extinct Calamite tree which have been preserved in an ironstone concretion. This two part fossil shows both the fern and its 'negative'. The Calamite was a medium sized tree, growing to around 30 meters (100 feet). Mazon Creek Fossil Beds, Braidwood, Illinois, USA. Carboniferous, circa 309 million years old. Length: 7cm width: 4cm depth: 2cm Measurements are approximate and the minimum size you should expect your item to be.