The Kokomo Formation is a

geologic formation A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...

Indiana Indiana ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Michigan to the northwest, Michigan to the north and northeast, Ohio to the east, the Ohio River and Kentucky to the s ...

. It preserves

fossils A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...

dating back to the

Silurian The Silurian ( ) is a geologic period and system spanning 23.5 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the third and shortest period of t ...

period Period may refer to: Common uses * Period (punctuation) * Era, a length or span of time *Menstruation, commonly referred to as a "period" Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (o ...

, most notably sea scorpions.

List of Known Taxa

Eurypterids

* ''Carcinosoma newlini'' * ''Kokomopterus longicaudatus''''Morphology, Taxonomy, and Classification of the Order Eurypterida Burmeister, 1843 V. P. Tollerton, Jr. Journal of Paleontology Vol. 63, No. 5 (Sep., 1989), pp. 642-657'' * ''Erieopterus limuloides''''Dunlop, J. A., Penney, D. & Jekel, D. 2015. A summary list of fossil spiders and their relatives. In World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch, version 16.0 http://www.wsc.nmbe.ch/resources/fossils/Fossils16.0.pdf (PDF).'' * ''Erieopterus ranilarva'' * ''Onychopterella kokomensis'''''' * ''Leperditia ohioensis''

Brachiopods

* '' Lingula'' sp. * ''Pentamerus divergens'' * ''Schuchertella interstriata''

Cnidarians

* ''Halysites ''

References

Sources