TRILOBITE GENERA AND SPECIES
LIST
for Genera beginning with letter i
Idahoia wisconsensis (Owen)
Idahoia sp. (Peerless Formation)
Iddingsia robusta Walcott
Illaenus cf. Illaenus
auriculatus (Ross, 1967)
Illaenus sp.
B of Ross (1970) [Ninemile Formation]
Irvingella (Ulrich & Resser in Walcott, 1924)
Irvingella (Parairvingella)
angustilimbata Kobayashi
Irvingella (Parairvingella)
eurekensis (Resser)
Irvingella
major (Ulrich & Resser, 1924)
Irvingella sp. A (of Chatterton & Ludvigsen, 1998)
Ischyrotoma (Raymond,
1925)
Ischyrotoma stubblefieldi (Ingham,
1986)
Ischyrotoma aff. stubblefieldi (Ingham,
1986)
Isoteloides (Raymond, 1910)