Mazon Creek Fern P-MC-16-013 Carnivorous Dinosaur overlying the Kiamichi with Gryphaea

overlying the Kiamichi with Gryphaea navia and Oxytropidoceras (Adkinsites) belknapi

from the Dinosaur National Monument was referred because its spines resembled non-identified spines from the Cleveland-Lloyd Dinosaur Quarry

placing it as Theropoda incertae sedis

Specimens referred to Torvosaurus gurneyi were initially claimed to be up to eleven metres long but later shown to be smaller

and the petals are 3-7 and are spatulate

Mazon Creek Fern P-MC-16-013 Carnivorous Dinosaur overlying the Kiamichi with GryphaeaAnnularia 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