恐龙 - 脊椎骨化石 - Edmontosaurus Sp
编号 83368011
惊人的罕见大型蕨类植物化石,伊利诺伊州马松溪 - 化石植物 - Macroneuropteris sp (没有保留价)
编号 83368011
惊人的罕见大型蕨类植物化石,伊利诺伊州马松溪 - 化石植物 - Macroneuropteris sp (没有保留价)
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.
Been in storage almost 100 years! From a long ago collection.
Concretion size:7 x 4 cm
Macroneuropteris sp
Moscovian / Desmoinesian
Francis Creek Shale Member, United States of America, Illinois, Mazon Creek Region
Rare of this quality.