Search results
Results From The WOW.Com Content Network
The Mazon Creek fossil beds are a conservation lagerstätte found near Morris, in Grundy County, Illinois. The fossils are preserved in ironstone concretions, formed approximately 309 million years ago in the mid- Pennsylvanian epoch of the Carboniferous period. These concretions frequently preserve both hard and soft tissues of animal and ...
Siderite or calcite nodules (chemicals released by decaying soft tissue modify the surrounding sediment into a siderite concretion or coal ball encasing the fossil, as found in the Mazon Creek fossil beds). Rapid sediment cementation (impressions of soft tissue preserved through casts and molds in the surrounding sediment, such as Ediacaran ...
Pohlsepia mazonensis is named after its discoverer, James Pohl, and the type locality, Mazon Creek. Its habitat was the shallows seawards of a major river delta in what at that time was an inland ocean between the Midwest and the Appalachians. In its initial description, it was considered to be the oldest known octopus, [1] but later studies ...
The Mazon River or Mazon Creek ( / məˈzɒn / ), is a tributary of the Illinois River in the United States. The confluence is near Morris, Illinois. [ 2] The Mazon River is associated with the Mazon Creek fossils of the Francis Creek Shale, which are also exposed in strip mines and quarries near the River. This fossil bed includes well ...
T. gregarium fossil (part and counterpart). Amateur collector Francis Tully [] found the first of these fossils in 1955 in a fossil bed known as the Mazon Creek formation. He took the strange creature to the Field Museum of Natural History, but paleontologists were stumped as to which phylum Tullimonstrum belonged in. [7] The species Tullimonstrum gregarium ("Tully's common monster"), as these ...
Mazon Creek vertebrates included the small amphibian Amphibamus grandiceps, which may be a relative of the amphibian lineage that led up to frogs. [10] Amphibians as large as ten feet in length lived in these swamps. [11] Some early vertebrates preserved in the Mazon Creek's concretionary nodules have fossilized soft tissue. [10]
Octomedusa is a genus of extinct scyphozoan jellyfish known from the Late Carboniferous sediments of the Mazon Creek fossil beds.It contains a single species, O. pieckorum.It was first described by Gordon Johnson and Eugene S. Richardson, Jr. in 1968, where its holotype (FMNH no. PE 11410) and paratype (FMNHno.PE 11377) being unearthed by Mr. and Mrs. Ted Piecko.
The Mazon Creek fossil beds are an important lagerstätte preserving fossils of an extremely wide array of organisms, which would have lived alongside Tyrannophontes. These include over 25 species of fish and numerous types of invertebrates , with the Sea anemone Essexella being the most abundant animal from this location.