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TRILOBITE GENERA AND SPECIES LIST

(for western North America)

 

I to L:

 

 

 

Idahoia

        I. wisconsensis (Owen)

        I. sp. (Peerless Fm.)

Iddingsia

        I. robusta Walcott

Illaenus Hall, 1863

        I. cf. I. auriculatus Ross, 1967

        I. sp. B of Ross (1970) [Ninemile Fm.]

Irvingella Ulrich & Resser in Walcott, 1924

        I. (Parairvingella) angustilimbata Kobayashi

        I. (Parairvingella) eurekensis (Resser)

        I. major Ulrich & Resser, 1924

        I. sp. A of Chatterton & Ludvigsen, 1998

Ischyrotoma Raymond, 1925

        I. stubblefieldi Ingham, 1986

        I. aff. stubblefieldi Ingham, 1986

Isoteloides Raymond, 1910

        I. flexus

        I. polaris

        I.? sp. Ross, 1951

Jeffersonia Poulsen, 1927

        J. peltabella Ross, 1951

Jenkinsonia Robison, 1971

        J. varga Robison, 1971

Judomia Lermontova, 1951

        "J." gracile (Walcott)

        Gen. aff. J. sp. (see Fritz, 1992) [Mural Fm.]

Kainella

        K. sp. cf. K. billingsi Walcott (Manitou Fm.)

        K. sp. (Manitou Fm.)

Kawina Barton, 1916

        K. sexapugia Ross, 1951

        K. wilsoni

?Kettneraspis Prantl & Pribyl, 1949

        ?K. sp. Norford, 1994

Kindbladia

        K. finis (Walcott)

Kirkella Kobayashi, 1942 [is a junior synonym of Ptyocephalus, fide WHITTINGTON, 1948]

        K. declevita Ross, 1951 [=Ptyocephalus declevita (Ross, 1951)]

        K. sp. Ross, 1951 [=Ptyocephalus sp. (Ross, 1951)]

Kistocare Lochman, 1948

        K. campbellensis Fritz, 1968

        K. corbini Lochman, 1948 [Arrojos Fm., Caborca, Mexico]

        K. tontoensis (Resser, 1945) [Bright Angle Shale, Grand Canyon, Arizona; Arrojos Fm., Caborca, Mexico]

Klotziella Raymond, 1928

        K. ornata (Walcott, 1908)

Knechtelia Lochman, 1950

        K. festiva (Lochman and Hu, 1960) [Pika Fm.]
Kochaspis Resser, 1935

       K. augusta [Species was reassigned to Kochiella by Sundberg & McCollum, 2002]

       K. cooperi Lochman, 1952 [Arrojos Fm., Caborca, Mexico]

       K.? dearbornensis Deiss, 1939 [Montana]

       K. liliana (Walcott, 1886)

       K. resseri Deiss, 1939 [Montana]
       K. unzia
Deiss, 1939 [Montana]
       K. upis
Deiss, 1939 [Montana]

Kochiella Poulsen, 1927

       K. arenosa Resser, 1939b

       K. augusta (Walcott, 1886)
       K. brevaspis Sundberg and McCollum, 2002

       K. chares (Walcott, 1917a)

       K. crito (Walcott, 1917b)

       K. eiffelensis (Rasetti, 1951)

       K. gibbosa Rasetti, 1957

       K. mackenziensis Norford, 1968

       K. mansfieldi Resser, 1939b
   
   K. maxeyi Rasetti, 1951

       K. rasettii Sundberg and McCollum, 2002
Kochiellina Palmer in Palmer & Halley, 1979

       K. groomensis Palmer in Palmer & Halley, 1979

       K. janglensis Palmer in Palmer & Halley, 1979

Kochina Resser, 1935

        K. americana (Walcott, 1912)

        K. macrops Rasetti, 1951

        K. vestina

        K. sp. (Langston Fm., Spence Tongue)

        K.? walcotti Sundberg and McCollum, 2000

Kollarcephalus

        K. granati Brezinski, 2000
Kootenia Walcott, 1889

        K. acicularis

        K. aculacauda Fritz, 1968

        K. burgessensis Resser, 1942 [Canada & Montana]

        K. brevispina Resser, 1939b
        K. convoluta Resser, 1939b

        K. crassa Fritz, 1968

        K. crassinucha Fritz, 1968

        K. cf. crassinucha Fritz, 1968

        K. dawsoni Walcott, 1918

        K. cf. dawsoni [Swasey Formation]

        K. erromena Deiss, 1939 = K. exilaxata [Montana]

        K. exilaxata Deiss, 1939 [Montana]
        K. fragilis
Deiss, 1939 = K. exilaxata [Montana]

        K. germana Resser, 1939b

        K. gracilis

        K. idahoensis

        K. infera Deiss, 1939 = K. exilaxata [Montana]
        K. latidorsata
Deiss, 1939 = K. exilaxata [Montana]

        K. margoindistincta

        K.? margodistincta [Whirlwind Fm.]

        K. mathewsi

        K. mendosa Resser, 1939b

        K. pariquadriceps

        K. pecteniodes Resser, 1939b

        K. quadriceps (Hall & Whitfield, 1877) [Utah, Montana]

        K. rugosa Deiss, 1939 = K. exilaxata [Montana]

        K. scapegoatensis Deiss, 1939 = K. exilaxata [Montana]

        K. serrata (Meek, 1873) [Montana]

        K. spencei Resser, 1939

        K. subequalis

        K. varia

        K. sp. [Pierson Cove Fm.]

        K. sp. [Chisholm Shale Fm.]

        K. sp. [Marjum Fm.]

        K. sp. [Wolsey Shale]

        K. n. sp. [Spence Shale]

        K. sp. [Metaline Fm.]

Labiostria Palmer, 1955 [Labiostria is a junior synonym of Aphelaspis, fide PALMER, 1965, although this is debated (see Chatterton & Ludvigsen, 1998)]]

        L. westropi Chatterton & Ludvigsen, 1998

        cf. L. westropi Chatterton and Ludvigsen, 1998 [Emigrant Fm.]

Labradoria Resser, 1936

        L? sp. (see Fritz, 1992) [Mural Fm.]

Lachnostoma Ross, 1951

        L. latucelsum Ross, 1951 (Zone J)

        L. sp. [Antelope Valley Fm.? & Ninemile Fm.]

Lancastria

        L. pacifica (Palmer, 1964)

Laudonia Harrington, 1956

        L. amputata Fritz, 1992

        L. bispinata Harrington, 1956

        L. prima (Lichman)

Leiostegium Raymond, 1913

        L. manitouense Walcott, 1925

        L. (Leoistegium) manitouensis Walcott, 1925

        L. (Manitouella) ulrici

Lejopyge Hawle & Corda, 1847

        L. acantha Robison, 1964 = L. multifora Opik, 1979

        L. armata (Linnarsson, 1869) [Lincoln Peak Fm., eastern Nevada]

        L. calva Robison, 1964 [Marjum & Weeks Fms., Utah; Lincoln Peak Fm., eastern Nevada]

        L. laevigata (Dalman, 1828) [Lincoln Peak Fm., eastern Nevada]

Leonaspis (Acanthalomina)

        L. (A.) minuta (Barrande, 1852)

Licnocephala Ross, 1951

        L. bicornata Ross, 1951

        L.? sp. Ross, 1951

Litocephalus

        L. bilobatus (Hall and Whitfield)

        L. granulomarginatus Palmer, 1960

        L. verruculapeza Palmer, 1960

Lonchocephalus

        L. plena

 

 

 

*Note: not all of the species are valid and errors in synonomy will be present. We do our best to keep up to date, but it is difficult to locate all changes. Also, not all of the authors' names are included, and may not be correct with respect to (brackets) for generic name changes. Please excuse any mistakes, as this species list is a meant as a first guide only.

 

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