Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 82 (1975) > Number 2
Document Type
Research
Keywords
Middle Pennsylvanian; Desmoinesian; Madera Formation; Madera County, Colorado; Marion County, Iowa; Crinoidea; Erisocrinidae; Erisocrinus knoxvillensis; Exaetocrinus maderaensis, Pontotocrinus coloradoensis; Erisocrinus typus
Abstract
Erisocrinus knoxvillensis n. sp. is described from rocks of the Desmoinesian Stage exposed near Knoxville, Marion County, Iowa. Two specimens from the Madera Formation, Desmoinesian Stage, Heurfano Park, Colorado, reported by Tischler, 1963, as belonging to the genus Erisocrinus are described as Exaetocrinus maderaensis n. sp. and Pontotocrinus coloradoensis n. sp. The lectoholotype of Erisocrinus typus Meek & Worthen, type species of the genus, is illustrated.
Publication Date
July 1975
Journal Title
Proceedings of the Iowa Academy of Science
Volume
82
Issue
2
First Page
126
Last Page
129
Copyright
©1975 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Strimple, H. L.
(1975)
"Erisocrinids (Crinoidea-Inadunata) from Middle Pennsylvanian Rocks of Iowa and Colorado,"
Proceedings of the Iowa Academy of Science, 82(2), 126-129.
Available at:
https://scholarworks.uni.edu/pias/vol82/iss2/14