Paraparchites mazonensis n. sp. (Ostracoda) from Middle Pennsylvanian ironstone concretions of Illinois
By: I. G. Sohn --.
Contributors: Field Museum of Natural History.
Series: Fieldiana -- v. 37, no. 2; Field Museum of Natural History. Publication -- 1263.; Publication (Field Museum of Natural History) -- 1263.
Publisher: Field Museum of Natural History
Published: 1977
Place of publication: Chicago
Subjects: Ostracoda, Fossil; Paleontology -- Pennsylvanian; Paleontology -- Illinois.
Other titles: New ostracode species
Description: A new ostracode species, Paraparchites mazonensis, is described from Mazon Creek concretions in the Middle Pennsylvanian Francis Creek Shale of Savage, 1927 (Desmoinesian = Westphalian C) in northeastern Illinois. The occurrence of this genus suggests a brackish water environment in the areas of formation of the ostracode-bearing ironstone concretions.