Mazon Creek Fern P-MC-16-024 Triassic This has superb preservation and

This has superb preservation and at least two seeds can be seen inside the fruit

is exposed in the railway cuts southeast of the main creek cuts

Yet this is still a remarkable specimen considering the rarity

the venation of the leaf is quite distinct

The paratypes consisted of three bones: the ischia UMNH VP 6379 and UMNH VP 380 and the pubic bone UMNH VP 6387

Mazon Creek Fern P-MC-16-024 Triassic This has superb preservation andPecopteris sp. Carbondale Formation Middle Pennsylvanian Grundy County, Illinois Complete siderite nodule with a very well preserved fern frond. The Mazon Creek area fossils are found mostly in siderite concretions. The concretions are found in the Francis Creek Shale Member within the Carbondale Formation of the Kewanee Group. The best nodules are a by product of coal strip mining operations. The age of the fossil plants is Desmoinesian, Middle