USNM:PAL
Spirifer mucronatus Conrad
USNM PAL97951A Butts & Lawrence
United States, Virginia, Frederick County
USNM:PAL
Spirifer arkansanus Girty
USNM PAL185209 G. Girty 1907-09-00
United States, Arkansas
USNM:PAL
Spirifera (Martinia) planoconvexa (Shumard)
USNM PAL174637 C. Hartt & O. Derby
Brazil, Para
USNM:PAL
Spirifer centronatus ladronensis Winchell
USNM PAL263390 A. Armstrong 1955-00-00
United States, New Mexico
USNM:PAL
Spirifer centronatus semifurcatus Winchell
USNM PAL35185 Iddings & Weed
United States, Wyoming
USNM:PAL
Spirifer centronatus Winchell
USNM PAL14224A
USNM:PAL
Spirifer (Delthyris) vanuxemi var. prognostica Schuchert
USNM PAL177452 Maryland Geological Survey
United States, Maryland, Allegany County
USNM:PAL
Spirifera
USNM PAL339989 1872-00-00
United States, Wyoming
USNM:PAL
Spirifer Armstrong
USNM PAL263424 A. Armstrong 1956-00-00
United States, New Mexico
USNM:PAL
Neospirifer mansuetus Cooper & Grant
USNM PAL154615C
United States, Texas, Brewster County
USNM:PAL
Spirifer (Eospirifer) radiatus obsoletus (Foerste)
USNM PAL84910
USNM:PAL
Anthracospirifer shawi shawi Gordon
USNM PAL163711 I. Keyte
United States, Wyoming, Fremont County
USNM:PAL
Spirifer macropleurus (Hall)
USNM PAL97861C Butts & Edmundson
United States, Virginia, Highland County
USNM:PAL
Neospirifer formulosus Cooper & Grant
USNM PAL152909N
United States, Texas, Brewster County
USNM:PAL
Spirifer whitneyi Hall
USNM PAL62029B Unknown
United States, New Mexico
USNM:PAL
Spirifer marcyi typicalis Williams
USNM PAL59617
USNM:PAL
Spirifer disjunctus var. animasensis Girty
USNM PAL33959
United States, Colorado
USNM:PAL
Spirifer planicostatus (Swartz)
USNM PAL97943B Butts & Edmundson
United States, Virginia, Washington County
USNM:PAL
Spirifer cyclopterus Hall
USNM PAL56705
USNM:PAL
Anthracospirifer rawlinsensis Gordon
USNM PAL167749
United States, Wyoming, Carbon County
USNM:PAL
Spirifer macrothyris Hall
USNM PAL71584B C. Butts
United States, Alabama, Calhoun County
USNM:PAL
Fusella llanoensis Carter
USNM PAL154845
United States, Texas, McCulloch County
USNM:PAL
Spirifer agelaius Meek
USNM PAL7807
USNM:PAL
Spirifer chappelensis Carter
USNM PAL154833
United States, Texas, McCulloch County
USNM:PAL
Spirifer engelmanni Meek
USNM PAL7748A A. Hague
United States, Nevada, White Pine District
USNM:PAL
Spirifer notabilis Kindle
USNM PAL62024A Unknown
United States, Colorado
USNM:PAL
Spirifera textus Hall
USNM PAL135212
USNM:PAL
Spirifer macra (Hall)
USNM PAL126735B R. Finks
United States, New York, Orange County
USNM:PAL
Eliva inflata Cooper & Grant
USNM PAL152887G
United States, New Mexico, Eddy County
USNM:PAL
Neospirifer apothescelus Cooper & Grant
USNM PAL154599B
United States, Texas, Brewster County
USNM:PAL
Neospirifer amphigyus Cooper & Grant
USNM PAL154596B
United States, Texas, Brewster County
USNM:PAL
Spirifera pulchra Meek
USNM PAL649
USNM:PAL
Spirifer concinnus Hall
USNM PAL59731
USNM:PAL
Spirifer centronatus Winchell
USNM PAL263387
United States, Ohio
USNM:PAL
Neospirifer formulosus Cooper & Grant
USNM PAL152908Q
United States, Texas, Brewster County
USNM:PAL
Neospirifer formulosus Cooper & Grant
USNM PAL152909J
United States, Texas, Brewster County
USNM:PAL
Eliva shumardi Cooper & Grant
USNM PAL154568E
United States, Texas, Culberson County
USNM:PAL
Spirifer curvilateralis Easton
USNM PAL118805A
USNM:PAL
Spirifer concinnus Hall
USNM PAL59732
USNM:PAL
Spirifer disjunctus Girty
USNM PAL177082 Maryland Geological Survey
United States, Maryland, Garrett County
USNM:PAL
Spirifer concinnus Hall
USNM PAL56703
USNM:PAL
Spirifer cyclopterus Hall
USNM PAL97755B Butts & Oder
United States, Virginia, Craig County
USNM:PAL
Spirifer nobilis Barrande
USNM PAL62302
USNM:PAL
Spirifer arenosus simplex (Conrad)
USNM PAL59737
USNM:PAL
Spirifer (Eospirifer) radiatus (Sowerby)
USNM PAL135210
USNM:PAL
Neospirifer bakeri bakeri King
USNM PAL152904D
United States, Texas, Brewster County
USNM:PAL
Neospirifer bakeri bakeri King
USNM PAL152904U
United States, Texas, Brewster County
USNM:PAL
Spirifer grimesi Hall
USNM PAL534227
United States, Iowa
USNM:PAL
Spirifer cobscooki Williams
USNM PAL61452
USNM:PAL
Neospirifer neali Cooper & Grant
USNM PAL152915E
United States, Texas, Brewster County
USNM:PAL
Neospirifer placidus Cooper & Grant
USNM PAL153276H
United States, Texas, Brewster County
USNM:PAL
Neospirifer thescelus Cooper & Grant
USNM PAL154611A
United States, Texas, Brewster County
USNM:PAL
Spirifer foggi Nettelroth
USNM PAL62398
USNM:PAL
Eliva shumardi Cooper & Grant
USNM PAL154569D
United States, Texas, Culberson County
USNM:PAL
Spirifer disjunctus var. animasensis Girty
USNM PAL180910 G. Eldridge
United States, Colorado, Chaffee County
USNM:PAL
Spirifer sp b Girty
USNM PAL61929 Blackwelder 1904-05-30
China, East Ssi-Chuan
USNM:PAL
Anthracospirifer occiduus (Sadlick)
USNM PAL167744
United States, Wyoming, Teton County
USNM:PAL
Neospirifer formulosus Cooper & Grant
USNM PAL152908C
United States, Texas, Brewster County
USNM:PAL
Spirifer cameratus Morton
USNM PAL181233 Wheeler Survey 1871-00-00
United States, Nevada
USNM:PAL
Spirifer (Delthyris) mesacostalis Hall
USNM PAL177076 Maryland Geological Survey
United States, Maryland, Garrett County
USNM:PAL
Spirifer angularis Schuchert
USNM PAL61748
USNM:PAL
Spirifer (Trigonotreta) pinonensis Meek
USNM PAL139081
USNM:PAL
Spirifer bifurcatus Hall
USNM PAL98077 C. Butts
United States, Virginia, Tazewell County
USNM:PAL
Spirifer whitneyi var. owenensis Webster
USNM PAL78586
USNM:PAL
Spirifer mucronatus Conrad
USNM PAL177333 Maryland Geological Survey
United States, Maryland, Allegany County
USNM:PAL
Spirifer (Reticularia) fimbriatus (Conrad)
USNM PAL177386 Maryland Geological Survey
United States, Maryland, Allegany County
USNM:PAL
Spirifer concinnus progradius Swartz
USNM PAL97858C Butts & Oder
United States, Virginia, Craig County
USNM:PAL
Spirifer occidentalis Kindle
USNM PAL62238
USNM:PAL
Spirifer (Eospirifer) radiatus (Sowerby)
USNM PAL62907
USNM:PAL
Spirifer winchelli Herrick
USNM PAL98048 Butts & Pohl
United States, Virginia, Tazewell County
USNM:PAL
Spirifer keokuk Hall
USNM PAL71634 C. Butts
United States, Alabama, Lauderdale County
USNM:PAL
Neospirifer sp 1 Cooper
USNM PAL126984A University of Oregon
United States, Oregon
USNM:PAL
Spirifera (Martinia) planoconvexa (Shumard)
USNM PAL174659 C. Hartt & O. Derby
Brazil, Para
USNM:PAL
Spirifer duodenarius (Hall)
USNM PAL97937B Butts & Edmundson
United States, Virginia, Smyth County
USNM:PAL
Spirifer milleranus Butts
USNM PAL69622
USNM:PAL
Ectochoristites inflatus Carter
USNM PAL154835
United States, Texas, McCulloch County
USNM:PAL
Spirifer bifurcatus Hall
USNM PAL98076B Butts & Pohl
United States, Virginia, Tazewell County
USNM:PAL
Spirifera (Martinia) maia Billings
USNM PAL13834A C. Walcott
United States, Nevada, Eureka District
USNM:PAL
Neospirifer bakeri bakeri King
USNM PAL152904E
United States, Texas, Brewster County
USNM:PAL
Neospirifer kansasensis (Shumard)
USNM PAL134568
USNM:PAL
Neospirifer amphigyus Cooper & Grant
USNM PAL152894R
United States, Texas, Brewster County
USNM:PAL
Spirifer cameratus venezuelensis Morton
USNM PAL221500 P. Christ 1926-05-05
Venezuela
USNM:PAL
Spirifer utahensis Meek
USNM PAL626A
USNM:PAL
Unispirifer minnewankensis (Shimer)
USNM PAL557974 E. McKee & R. Gutschick
United States, Arizona
USNM:PAL
Anthracospirifer occiduus (Sadlick)
USNM PAL256823
United States, Arizona
USNM:PAL
Spirifera trigonalis (Martin)
USNM PAL14323E C. Walcott
United States, Nevada, Eureka District
USNM:PAL
Neospirifer bakeri columbarius Cooper & Grant
USNM PAL152905O
United States, Texas, Brewster County
USNM:PAL
Spirifer marcyi var. superstes Clarke & Swartz
USNM PAL177267 Maryland Geological Survey
United States, Maryland, Allegany County
USNM:PAL
Neospirifer formulosus Cooper & Grant
USNM PAL152906J
United States, Texas, Brewster County
USNM:PAL
Spirifer cardinalis Belanski
USNM PAL71364
USNM:PAL
Neospirifer amphigyus Cooper & Grant
USNM PAL152894K
United States, Texas, Brewster County
USNM:PAL
Neospirifer thescelus Cooper & Grant
USNM PAL152916G
United States, Texas, Brewster County
USNM:PAL
Spirifera (Martinia) perplexa McChesney
USNM PAL174555 C. Hartt & O. Derby
Brazil, Para
USNM:PAL
Neospirifer neali Cooper & Grant
USNM PAL152915D
United States, Texas, Brewster County
USNM:PAL
Neospirifer apothescelus Cooper & Grant
USNM PAL152900C
United States, Texas, Brewster County
USNM:PAL
Spirifer floydensis Weller
USNM PAL143386
USNM:PAL
Neospirifer
USNM PAL534206 Newell & Haralambous
Greece
USNM:PAL
Spirifera (Martinia) maia Billings
USNM PAL13834B C. Walcott
United States, Nevada, Eureka District
USNM:PAL
Spirifer cameratus Morton
USNM PAL6985
USNM:PAL
Neospirifer thescelus Cooper & Grant
USNM PAL152916N
United States, Texas, Brewster County