Pay in 4 interest-free payments of $5.00 Learn more
Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
The iridescent rainbow colour is a result of oxidisation as the stair-step crystals cool
these russet coloured fossils are a great 'beginner's' trilobite
Early Pliocene
From the Hamar L’Aghdad Formation
Calamite tree seed fern Miocene The iridescent rainbow colour isFossilised leaves from the extinct Calamite tree which have been preserved in an ironstone concretion. This two part fossil shows both the fern and its 'negative'. The Calamite was a medium sized tree, growing to around 30 meters (100 feet). Mazon Creek Fossil Beds, Braidwood, Illinois, USA. Carboniferous, circa 309 million years old. Length: 7cm width: 4cm depth: 2cm Measurements are approximate and the minimum size you should expect your item to be.
US$ 14.99
US$ 18.00
US$ 29.00
US$ 15.00
US$ 25.00
US$ 11.00
US$ 19.99