Dinosaurie svanskotor - Fossiliserat djur - Hadrosaurus - 7 cm - 6 cm
Nr 82669355
Fantastisk sällsynt stor fossil ormbunke Mazon Creek, Illinois - Fossiliserad växt - Pecopteris camertonensis (Kidston) Wagner
Nr 82669355
Fantastisk sällsynt stor fossil ormbunke Mazon Creek, Illinois - Fossiliserad växt - Pecopteris camertonensis (Kidston) Wagner
A siderite concretion that was split open to reveal an impression of a 3D fern.
Mazon Creek, Illinois, is a famous fossil locality containing plants and animals from 309 million years ago.
These fossils formed from a large flooding event that rapidly buried organisms, allowing for soft parts to be preserved.
This fern fossil was collected in the 1920s in Grundy County and it show really high quality.
Macroneuropteris is genus of seed ferns, extinct species of fern that reproduced from seed as opposed to sporophyte reproduction of most modern ferns.
Very difficult to find in this quality today.
Glued on top.
Been in storage almost 100 years! From a long ago collection.
Concretion size: 11 x 4,4 cm
Pecopteris camertonensis (Kidston) Wagner
Moscovian / Desmoinesian
Francis Creek Shale Member, United States of America, Illinois, Mazon Creek Region
Rare of this quality.
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