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The flower is staminate with globose anthers attached to individual filaments
quadrupedal animals
The validity of these additional species has been questioned
The paratypes consisted of three bones: the ischia UMNH VP 6379 and UMNH VP 380 and the pubic bone UMNH VP 6387
and early Tithonian stages of the Late Jurassic period
Mazon Creek Fern P-MC-16-002 Damselfly The flower is staminate withNeuropteris 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
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