TRILOBITE
GENERA AND SPECIES LIST
(for
western
Q to Z:
Radiurus Ramskold, 1983
R. avalanchensis Chatterton and Perry, 1984
Rasettia [=Platycolpus Raymond, 1931
[Platycolpus RAYMOND, 1913a [preocc. replaced by Rasettia]]
R.? sp. (Ross, 1951) [formerly Platycolpus? sp. Ross, 1951]
Raymondaspis Pribyl
in Prantl & Pribyl, 1949
R. vespertina Ross, 1967
Remopleuridiella Ross,
1951
R. caudalimbata Ross, 1951
Rowia Deiss, 1939 = Parehmania Deiss, 1939
R. cylindrical = Parehmania
princeps Deiss, 1939 [Montana]
R. delicate = Parehmania princeps
Deiss, 1939 [Montana]
R. granulata = Parehmania
princeps Deiss, 1939 [Montana]
R. vulgata = Parehmania princeps Deiss,
1939 [Montana]
Schachtenella
(Peters,
unpublished)
S. ultraspinus (Peters, unpublished)
Schistometopus Resser, 1938a [Sundberg &
McCollum, 2002 considered this genus as nomen
dubium and restricted this genus to
the type species. Species formerly
assigned to this genus are
referred to Hadrocephalites.]
S. typicalis Resser, 1938a
Schmalenseeia Moberg, 1903
S. sp.
Scinocephalus Ross,
1951
S. solitecti Ross, 1951
Scotoharpes Lamont, 1948
S. sp. Norford, 1994
Scutellum
S. sp. indet. (Gazelle Fm.)
Selenocoryphe (not formally published (in Beebe,1990, unpublished dissertation))
S. platura
(Shanan Peters dissertation, 2003, unpubl.)
S. sp. (Weeks Fm.)
Shumardia
Billings, 1862
S. exopthalmus Ross, 1967
Sevillia
S. trinucleata (?= Phillipsia trinucleata Herrick)
Sigmocheilus
S. grata
(Resser)
S. pogonipensis (Resser)
S. serratus Palmer, 1960
S. utahensis (Resser)
Solenopleura Angelin, 1854
S. sp. (Langston Fm., Spence Tongue)
Solenopleurella Poulsen, 1927
S. pagodensis Deiss, 1939
[Montana]
Songkania W.
Zhang, 1974
S. sp. Norford, 1994
Spencella Rasetti,
1963
S.
cf. S. montanensis Rasetti, 1963 [Pika Fm.]
S.? buttsi
S.? utahensa
Spencia Resser,
1939a (includes Stauroholcus Resser, 1939a; fide Rasetti, 1951)
S. plena Resser, 1939a = S.
typicalis Resser, 1939a; fida Rasetti, 1963, p. 591.
S. quadrata Fritz, 1968
S. typicalis Resser,
1939a
Stephenaspis Rasetti,
1951
S. avitus Palmer, 1964
S. bispinosa Rasetti, 1951 [B.C.]
S. highlandensis Sundberg and McCollum, 2003a
S. sp. [Harkless Fm.]
Strotocephalus Resser, 1935 is synonymous with Amecephalus (see Sundberg, 1999)
[S. gordonensis Resser, 1935] = Amecephalus gordonensis
(Resser, 1935)
Symphysurina Ulrich
in Walcott, 1924a
S. cf. S. globocapitella Hintze (Manitou Fm.)
S. sp. A Ross, 1951
S. sp. B Ross, 1951
Symphysurus Goldfuss, 1843
"S.?" goldfussi Walcott, 1884
Syspacephalus
Resser, 1936 = Ptychoparella Poulsen, 1927 (although not
everyone agrees, see Sundberg & McCollum, 2003b, p. 978)
S. crassus Rasetti, 1951 = Ptychoparella crassus (Rasetti, 1951)
S. gregarius Rasetti, 1951
S. laticeps Rasetti, 1951
S. longus Palmer in Palmer & Halley 1979
= Ptychoparella
longus
S. obscurus Palmer
in Palmer & Halley 1979 [currently being worked on]
S. spencei (Resser
1939a) = Ptychoparella spencei
S. variosus Sundberg
& McCollum, 2003b
S. sp. unident. = Ptychoparella
sp. unident.
S. sp. (see Palmer, 1964) [Harkless Fm. and Bonnia-Olenellus
Biozone,
Taenora
T. expansa Palmer, 1960
Taxioura = Ogygopsis (Taxioura is
a j.s.s. of Ogygopsis)
T. elongata McLaughlin and Enbysk, 1950 [=Ogygopsis elongata (McLaughlin and Enbysk,
1950)]
T. depressa Ross, 1951
Thigriffides
T.(?) alamogordoensis Brezinski, 2000
T. triangulatus Brezinski, 2000
T. sp. (in Brezinski, 2000)
Thompsonaspis Deiss, 1939 [Montana]
T. obscura Deiss, 1939 [Montana]
T. striata Deiss, 1939 = Alokistocare subcoronatum
(Hall & Whitfield, 1877)
Thoracocare Robison & Campbell, 1974
T. minuta (Resser, 1939a)
Tomagnostella Howell, 1935
T. sp. [Marjum Fm.]
Tonkinella Mansuy, 1916
T. breviceps Kobayashi, 1934
T. stephensis Kobayashi, 1935 [Canada & Montana]
T. valida Tchernysheva, 1962
Tonopahella Sundberg & McCollum, 2003b
T.
goldfieldensis Sundberg
& McCollum, 2003b
T. walcotti Sundberg &
McCollum, 2003b
Trachycheilus
Resser, 1945
T. granulosus Sundberg, 1994
T. typicale Resser, 1945
T. whirlwindensis Sundberg, 1994
T.? sp. A Sundberg, 1994
[Chisholm Fm.]
Triadaspis Opik, 1967
T. bigeneris
Tricrepicephalus Kobayashi, 1935
[T. coria (Walcott,
1916)] = Tricrepicephalus
texanus (Shumard, 1861) (see Pratt, 1992)
T. texanus (Shumard, 1861) - old name
was Tricrepicephalus
coria
T. sp.
(McKay Group)
T. n. sp. (Weeks Fm.)
Trigonocerca Ross,
1951
T. typica Ross, 1951
Trochurus
T. sp. indet. (Gazelle Fm.)
Tympanuella Sundberg, 1994
T. transversa Sundberg, 1994
Trymataspis Robison, 1964
T. depressa Robison, 1964
T. lomaleie Robison, 1964
T. pristina Robison, 1964
Ursinella Eddy and
McCollum, 1998
U. major Eddy and McCollum, 1998
Utaspis Robison, 1964
U. marjumensis
Robison, 1964
U. sp.
Utia Walcott, 1924b
U. curio Walcott, 1924b
Vanuxemella Walcott, 1916a
V. contracta
Walcott, 1916a
V. nortia Walcott, 1916a
Volocephalina Palmer in
Palmer & Halley, 1979
V. connexa Palmer in Palmer & Halley, 1979
V. contracta Palmer in Palmer & Halley, 1979
V. variosa Eddy and
McCollum, 1998
Wallacia Lamont, 1978
W. hendersoni Norford, 1994
Wanneria Walcott, 1910
Wanneria? gracile
Walcott, 1910 = Nevadia gracile (Walcott, 1910)
W. walcottana (Wanner, 1901) [Type from Pennsylvania]
W. cf. W.
walcottana (Wanner, 1901) [Saline Valley Fm.]
W. n. sp. [Eager Fm.]
"new wanneriid" (possibly Elliptocephala)
Weeksina Resser, 1935
W. unispina
(Walcott, 1916b)
Wenkchemnia Rasetti, 1951 [is a junior synonym
of Bathyuriscus, fide ROBISON, 1976]. Note: Wenkchemnia is
apparently a junior synonym of Bathyuriscus, fide ROBISON, 1976
according to Jell and Adrain, 2003. Fred Sundberg and others strongly believe
that Wenkchemnia Rasetti, 1951 is a valid genus and that Dick Robison
shouldn't have placed it in synonomy with Bathyuriscus Meek, 1873. Both Sundberg & Robison stick to their
positions, so the issue is unresolved. For our list, we will go with the genus
that the author of the species uses. All species of Wenkchemnia should
perhaps be called Wenkchemnia (?=Bathyuriscus) spp. for now.
W. spinicollus Rasetti, 1951 [Type
from the Mount Whyte Fm. in B.C., also reported by Sundberg & McCollum,
2003b from the Monola Formation in eastern
W. sulcata Rasetti, 1951 [Type
from the Mount Whyte Fm. in B.C., also reported by Sundberg & McCollum,
2003b from the Emigrant Formation in western
W. swasensis Sundberg, 1994 [Type from the Swasey Limestone, western Utah]
W. walcotti Rasetti, 1951 [Type
from the Mount Whyte Fm. in B.C., also reported by Sundberg & McCollum, 2003b
from the Emigrant Formation in western Nevada]
W.? housensis Sundberg, 1994 [Type from the Dome Limestone, western Utah]
Wujiajiania Lu & Lin, 1980
W. sutherlandi Chatterton & Ludvigsen, 1998
cf. W.
sutherlandi Chatterton and Ludvigsen, 1998
Xenostegium Walcott,
1924b
X. franklinense Ross, 1951
"X." taurus Walcott
Yokoaspis
Youngia Lindstrom,
1885
Y. sp. 1 Norford, 1994
Y. sp. 2 Norford,
1994
Yuknessaspis Rasetti,
1951
Y. paradoxa
Rasetti, 1951
Y. benningtonis planus Sundberg,
1994
Y. benningtonis benningtonis Sundberg, 1994
Y. benningtonis convexus Sundberg, 1994
Zacanthoides Walcott,
1888
Z. abbreviatus Resser, 1939a
Z. adjunctus Resser, 1939a
Z. alatus Resser, 1939b
Z. cnopus Walcott, 1917
Z. demissus Fritz, 1968 {Nevada]
Z. divergens Rasetti, 1951
Z. divergens divergens Sundberg, 1994
Z. divergens limbus Sundberg, 1994
Z. fronsilicinus Sundberg, 1994
Z. grabaui
Pack, 1906
Z. cf. grabaui Pack, 1906 [Chisholm Shale]
Z. gradates Resser, 1939a
Z. holopygus Resser, 1939a
Z. idahoensis Walcott,
1908
Z. longipygus Rasetti, 1951
Z. planifrons Rasetti, 1951
Z. romingeri Resser,
1942
Z. serratus Resser, 1939a
Z. sexdentatus Rasetti, 1951
Z. submuticus Rasetti, 1951
Z. typicalis
(Walcott, 1886)
Z. variacantha Palmer in Palmer & Halley, 1979
Z. walapai Sundberg, 1994
Z. sp. [Wheeler Formation]
Z. sp. [Carrara Fm.]
Z. sp. [Spence Fm. - which species is
this?]
Z. sp. (
Z.? sp.
Z. sp. 2 [Wolsey Shale]
Z. n. sp. [Spence Shale]
Z. n. sp. [Chisholm Shale]
Zacanthopsina Palmer, 1964
Z. eperephes Palmer, 1964
Zacanthopsis Resser,
1938b
Z. contractus Palmer, 1964
Z.
Z. n. sp.
Z. sp. (Harkless Fm.)
Z. n. sp. 1 [
corynexochid
genus and species unidentified [Pioche Shale]
indet.
lichid Norford, 1994 [Tegert Fm.]
ptychopariid
n. gen. & sp. B (see Mount, 1980) [Carrara Fm.]
olenellid -
new genus and species (see Mount, 1980) [Cadiz Fm.]
ptychopariid
new genus and species (see Mount, 1980) [Chambless Limestone]
Gen. and sp. indet. 1
(see Melzak and Westrop, 1994) [Pika Fm.]
Gen. and sp. indet. 2
(see Melzak and Westrop, 1994) [Pika Fm.]
Gen. and
sp. undetermined 1 (see Palmer, 1964) [Saline Valley Fm.]
Gen. and
sp. undetermined 2 (see Palmer, 1964) [Saline Valley Fm.]
Gen. and
sp. undetermined 3 (see Palmer, 1964) [Saline Valley Fm.]
undetermined
genus and species A Ross, 1951
undetermined
genus and species B Ross, 1951
undetermined
genus and species C Ross, 1951
undetermined
genus and species D Ross, 1951
undetermined
genus and species E Ross, 1951
bristoliinae
n. gen. 1 n. sp. 1 [Carrara Fm.]
biceratopsinae n. gen. 1 n. sp. 1 [Carrara Fm.]
biceratopsinae n. gen. 1 n. sp. 2 [Carrara Fm.]
biceratopsinae n. gen. 1 n. sp. 3 [Carrara Fm.]
Genus and
species undet. 1
Genus and
species undet. 2
Genus and
species undet. 3
kochaspid
sp. [Emigrant Fm.]
kochaspid indet.
(new) [Metaline Fm.]
ptychopariid sp. A [Emigrant Fm.]
undescribed Marjum Fm.
trilobite
Gen. and sp.
indet. (in Brezinski, 2000)
*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.
page designed and maintained by Kevin D. Brett