TRILOBITE GENERA AND SPECIES LIST
for Genera beginning with letter B

Baltagnostus (Lochman in Lochman & Duncan, 1944)

Baltagnostus eurypyx

Basilicus (Salter, 1849)

Basilicus ? sp. (Ross, 1951)

Bathynotus (Hall, 1860)

Bathynotus holopygus (Hall, 1859)

Bathyocos (Sundberg, 1994)

Bathyocos housensis (Sundberg, 1994)

Bathyuriscidella (Rasetti, 1948)

Bathyuriscidella amplicauda

Bathyuriscus Meek, 1873

Bathyuriscus adaeus (Walcott, 1916)
Bathyuriscus atossa (Walcott, 1916) [Spence Shale, Idaho]
Bathyuriscus brighamensis (Resser 1939a)
Bathyuriscus elegans
Bathyuriscus fimbriatus (Robison, 1964)
Bathyuriscus formosis [Meagher Shale, Montana] (Deiss, 1939 = Bathyuriscus haydeni Meek, 1873 [fida Robison, 1964])
Bathyuriscus haydeni (Meek, 1873 [Montana])
Bathyuriscus rotundatus (Rominger, 1887)
Bathyuriscus rugosus (Deiss, 1939 = B. haydeni Meek, 1873 [fida Robison, 1964])
Bathyuriscus wasatchensis (Resser 1939b)
Bathyuriscus sp. [Metaline Formation]

Bellefontia (Ulrich in Walcott, 1924b)

Bellefontia acuminiferentis (Ross, 1951)
Bellefontia chamberlaini (Clark, 1935)
Bellefontia cf. B. chamberlaini (Clark, 1935 [Manitou Formation])

Benthamaspis (Poulsen, 1946)

Benthamaspis sera (Fortey and Droser, 1999)

Biceratops (Pack & Gayle, 1971)

Biceratops nevadensis (Pack & Gayle, 1971 [Type from the Bright Angle Shale, Nevada & Arizona])

Bienvillia Clark, 1924

Bienvillia papulosa (Fortey, 1974)

Blountia

Blountia sp. (Weeks Formation)

Bolaspidella (Resser, 1937b)

Bolaspidella contracta (Robison, 1964)
Bolaspidella drumensis (Robison, 1964)
Bolaspidella housensis (Walcott, 1886)
Bolaspidella resseri (Miller, 1936) [Pika Formation]
Bolaspidella wellsvillensis (Lochman & Denson, 1944)
Bolaspidella n. sp. [Marjum Formation]
Bolaspidella sp. [Marjum Formation]

Bolaspis (Resser, 1935)

Bolaspis globulifera (Deiss, 1939) [Montana]
Bolaspis grandis (Deiss, 1939) [Montana]
Bolaspis labrosa (Walcott, 1916) [All of the Deiss 1939 species should be synonymized]
Bolaspis minuta (Deiss, 1939) [Montana]
Bolaspis ? unica (Deiss, 1939) [Montana]
Bolaspis vera (Deiss, 1939) [Montana]

Bolbolenellus (Palmer & Repina, 1993)

Bolbolenellus brevispinus (Palmer, 1998 [Type from the Pioche Shale, eastern Nevada and reported by Sundberg & McCollum, 2003b from the Emigrant Formation, Western Nevada])
Bolbolenellus euryparia (Palmer, in Palmer & Halley 1979) [=O. euryparia Palmer, in Palmer & Halley 1979]
Bolbolenellus n. sp. 1 [Carrara Formation]

Bonnia (Walcott, 1916)

Bonnia caperata (Palmer, 1964)
Bonnia copia (Fritz, 1968)
Bonnia sp. (see Fritz, 1992) [Mural Formation]

Brachyaspidion (Miller, 1936)

Brachyaspidion microps (Robison, 1971)
Brachyaspidion sulcatum (Robison, 1964)

Brachymetopus

Brachymetopus indianwellensis (Brezinski, 2000)
Brachymetopus cf. pseudometopina (Gauri and Ramovs [Mount Mark Formation])

Bradyfallotaspis (Fritz, 1972)

Gen. aff. Bradyfallotaspis sp. (see Fritz, 1992) [Mural Formation]

Breviphillipsia

Breviphillipsia semeretis (Hessler, 1963)
Breviphillipsia sp. [Baird Formation]

Bristolia (Harrington, 1956)

Bristolia anteros (Palmer in Palmer & Halley, 1979)
Bristolia brachyoma (Palmer)
Bristolia bristolensis (Resser, 1928)
Bristolia fragilis (Palmer in Palmer & Halley, 1979)
Bristolia harringtoni (Lieberman, 1999)
Bristolia insolens (Resser, 1928)
Bristolia mohavensis (Resser, 1928) (not sure about the correct author, spelling, or generic assessment of this species)
Bristolia mohavensis (Crickway, 1933) = Olenellus mojavensis (Crickway, 1933)
Bristolia mohavensis (Resser, 1928)
Bristolia n. sp. (Mount, 1980, fig. 16) [Latham Shale]
Bristolia  n. sp. 1 [Carrara Formation]
Bristolia  n. sp. 2 [Carrara Formation]
Bristolia  n. sp. 3 [Carrara Formation]
Bristolia  n. sp. 4 [Carrara Formation]
Bristolia  n. sp. 5 [Carrara Formation]

Burlingia (Walcott, 1908)

Burlingia sp. [Swasey Formation]

Burnetiella (Lochman, 1958)

Burnetiella leechi (Chatterton & Ludvigsen, 1998)

Bynumina

Bynumina globosa (Walcott)

Bynumiella [Bynumiella is a junior synonym of Clelandia, fide PALMER, 1965]

Bynumiella ? acuminata Palmer, 1960 [=Clelandia acuminata]