The Jeffersonville is a coarse grained, dark gray, thick bedded, fossiliferous limestone. R. D. Perkins (1963) divided the Jeffersonville into five zones based on petrology and fossil content, and these are summarized below (in stratigraphic order): •
Paraspirifer acuminatus zone (top) • fenestrate bryozoan-brachiopod zone •
Brevispirifer gregarius zone •
Amphipora-zone • Coral zone (base, overlies Geneva Dolomite or Louisville Limestone)
Fossils The Jeffersonville Limestone is well known for its fossils, including the well-exposed corals, many in life positions, at Falls of the Ohio. Edward Kindle described many species from the Falls of the Ohio in 1899:
Zaphrentis giganteus,
Z. ungula •
Gastropods:
Callonema bellatulum,
C. imitator,
Platyceras dumosum,
Platvstoma lineatum,
Trochonema rectilatera,
Holopea sp.,
Pleurotomaria sp.,
Turbo shumardi •
Bivalves:
Actinopteria boydi,
Aviculopecten sp.,
Glyptodesma occidentale,
Macrodon sp. (?),
Modiomorpha affinis,
M. mytiloides,
Ptychodesma sp. •
Trilobites:
Proetus canaliculatus,
P. crassimarginatus,
P. microgemma,
Dalmanites anchiops var.
sorbrinus,
D. selenurus Campbell and Wickwire (1955) listed the following species in the Jeffersonville from outcrops in the vicinity of
Hanover, Indiana: • Corals:
Heliophyllum halli,
Hexagonaria prisma,
Favosites turoinatus,
F. limitaris,
Emmonsia emmonsi,
E. epidermatus,
Synaptophyllum simcoense,
Homalophyllum exiguum,
Zaphrentis phyrgia,
Blothrophyllum promissum,
Alveolites sps.,
Michelinia sps. •
Bryozoa:
Sulcoretepona gilberti,
Polypora shumardi • Gastropods:
Platyceras dumosum,
Bellerophon patulus • Brachiopods:
Paraspirifer acuminatus,
Brevispirifer gregarius,
Fimbrispirifer divaricatus,
Meristina nasuta,
Megastrophia hemispherica • Bivalves:
Turbinopsis shumardi,
Glyptodesma occidentali,
Conocardium cuneus •
Crinoid:
Nucleocrinus verneuili • Trilobites:
Phacops rana,
Anchiops anchiops •
Cephalopods:
Gyroceras indianense Other
trilobites include the following:
Arctinurus sp.,
Anchiopsis anchiops,
Anchiopsis tuberculatus, "
Calymene"
platys,
Coronura aspectans,
C. myrmecophorus,
C. helena,
Crassiproteus clareus,
C. crassimarginatus,
C. macrocephalus,
Greenops kindlei,
Odontocephalus bifidus,
O. magnus,
Odontochile pleuroptyx,
Phacops nasutus,
Phacops pipa,
Trypaulites calypso Ostracods were documented by Kesling and Peterson in 1958. Genera identified include:
Abditoloculina,
Adelphobolbina,
Ctenoloculina,
Flaccivelum,
Hollina,
Hollinella, and
Subligaculum. The
Blastoids
Codaster alternatus and
Codaster pyramidatus, among others, were identified by Cline and Heuer in 1950 at Falls of the Ohio.
Notable exposures Type locality is at
Falls of the Ohio State Park near
Louisville, Kentucky. ==Age==