USNM:PAL
Spirifer macropleurus (Hall)
USNM PAL97861B Butts & Edmundson
United States, Virginia, Highland County
USNM:PAL
Neospirifer amphigyus Cooper & Grant
USNM PAL152894G
United States, Texas, Brewster County
USNM:PAL
Unispirifer minnewankensis (Shimer)
USNM PAL557931 E. McKee & R. Gutschick
United States, Arizona
USNM:PAL
Spirifer disjunctus var. animasensis Girty
USNM PAL180926 G. Eldridge
United States, Colorado, Gunnison County
USNM:PAL
Brachythyrina washakiensis Gordon
USNM PAL241071
United States, Wyoming, Teton County
USNM:PAL
Spirifer compositus Girty
USNM PAL180667 1906-10-00
United States, Pennsylvania
USNM:PAL
Neospirifer formulosus Cooper & Grant
USNM PAL152906E
United States, Texas, Brewster County
USNM:PAL
Spirifer bifurcatus Hall
USNM PAL71633B C. Butts
United States, Alabama, Lauderdale County
USNM:PAL
Spirifer (Eospirifer) radiatus (Sowerby)
USNM PAL62296
USNM:PAL
Spirifer (Trigonotreta) argentarius Meek
USNM PAL62234
USNM:PAL
Spirifer pellaensis Weller
USNM PAL118654
USNM:PAL
Neospirifer amphigyus Cooper & Grant
USNM PAL152894P
United States, Texas, Brewster County
USNM:PAL
Unispirifer lateralis (Hall)
USNM PAL263462
United States, Arizona, Cochise County
USNM:PAL
Spirifer modestus plicatus Maynard
USNM PAL97678 C. Butts
United States, Virginia, Highland County
USNM:PAL
Neospirifer mansuetus Cooper & Grant
USNM PAL152914H
United States, Texas, Brewster County
USNM:PAL
Spirifer curvilateralis Easton
USNM PAL118804
USNM:PAL
Spirifer mucronatus var. posterus Hall & Clarke
USNM PAL177318 Maryland Geological Survey
United States, Maryland, Allegany County
USNM:PAL
Eliva shumardi Cooper & Grant
USNM PAL118588C
United States, Texas
USNM:PAL
Spirifer Armstrong
USNM PAL263423 A. Armstrong 1956-00-00
United States, New Mexico
USNM:PAL
Spirifer (Trigonotreta) pinonensis Meek
USNM PAL11583
USNM:PAL
Spirifer coniculus Girty
USNM PAL33964B Cross & Spencer 1898-00-00
United States, Colorado
USNM:PAL
Spirifer (Eospirifer) radiatus (Sowerby)
USNM PAL62295
USNM:PAL
Spirifer tenuicostatus Hall
USNM PAL263434 A. Armstrong 1956-00-00
United States, New Mexico
USNM:PAL
Neospirifer neali Cooper & Grant
USNM PAL152915A
United States, Texas, Brewster County
USNM:PAL
Spirifer pluto Clarke
USNM PAL14980
USNM:PAL
Mirifusella fortunata Carter
USNM PAL557934 E. McKee & R. Gutschick
United States, Arizona
USNM:PAL
Spirifer granulosus (Conrad)
USNM PAL177388 Maryland Geological Survey
United States, Maryland, Allegany County
USNM:PAL
Spirifer mexicanus Girty
USNM PAL179811 G. Richardson 1903-09-23
United States, Texas, Culberson County
USNM:PAL
Spirifera (Martinia) glabra var. nevadensis Walcott
USNM PAL13836A C. Walcott
United States, Nevada, Eureka District
USNM:PAL
Neospirifer notialis Cooper & Grant
USNM PAL152910J
United States, Texas, Brewster County
USNM:PAL
Neospirifer bakeri bakeri King
USNM PAL154613H
United States, Texas, Brewster County
USNM:PAL
Prospira greenockensis (Brown)
USNM PAL176880
United States, Iowa, Pocahontas County
USNM:PAL
Eliva shumardi Cooper & Grant
USNM PAL154569B
United States, Texas, Culberson County
USNM:PAL
Anthracospirifer rawlinsensis Gordon
USNM PAL167747
United States, Wyoming, Carbon County
USNM:PAL
Unispirifer balki Armstrong
USNM PAL263473
United States, Arizona, Cochise County
USNM:PAL
Spirifer (Delthyris) mesacostalis Hall
USNM PAL177429 Maryland Geological Survey
United States, Maryland, Allegany County
USNM:PAL
Neospirifer amphigyus Cooper & Grant
USNM PAL152893B
United States, Texas, Brewster County
USNM:PAL
Neospirifer sp 1 Cooper
USNM PAL115496A G. Cooper
Mexico, Sonora
USNM:PAL
Spirifer (Eospirifer) radiatus (Sowerby)
USNM PAL62297
USNM:PAL
Spirifer (Delthyris) crispus Hall
USNM PAL177516 Maryland Geological Survey
United States, Maryland, Allegany County
USNM:PAL
Anthracospirifer shawi exoletus Gordon
USNM PAL167756
United States, Wyoming, Fremont County
USNM:PAL
Spirifer granulosus (Conrad)
USNM PAL168904
United States, Maryland, Allegany County
USNM:PAL
Neospirifer thescelus Cooper & Grant
USNM PAL154610B
United States, Texas, Brewster County
USNM:PAL
Spirifer leidyi Norwood & Pratten
USNM PAL98079A Butts & Meacham
United States, Virginia, Smyth County
USNM:PAL
Spirifera raricosta (Conrad)
USNM PAL13829C C. Walcott
United States, Nevada, Eureka District
USNM:PAL
Anthracospirifer n Carter et al.
USNM PAL557935 E. McKee & R. Gutschick
United States, Arizona
USNM:PAL
Spirifer sp b Girty
USNM PAL179806 Girty 1901-10-01
United States, Texas, Culberson County
USNM:PAL
Spirifer notabilis Kindle
USNM PAL62024B Unknown
United States, Colorado
USNM:PAL
Spirifer pauliformis Williams
USNM PAL89768
USNM:PAL
Unispirifer forbesi (Norwood & Pratten)
USNM PAL557962 E. McKee & R. Gutschick
United States, Arizona
USNM:PAL
Prospira sp b Carter et al.
USNM PAL557955 E. McKee & R. Gutschick
United States, Arizona
USNM:PAL
Spirifer marcyi Hall
USNM PAL98001B Butts Et Al
United States, Virginia, Bath County
USNM:PAL
Spirifer Boucot et al.
USNM PAL125266
USNM:PAL
Spirifer engelmanni Meek
USNM PAL7748 A. Hague
United States, Nevada, White Pine District
USNM:PAL
Spirifer foggi Nettelroth
USNM PAL62300
USNM:PAL
Neospirifer thescelus Cooper & Grant
USNM PAL154612A
United States, Texas, Brewster County
USNM:PAL
Spirifera Hall & Whitfield
USNM PAL14469 C. King
United States, Utah
USNM:PAL
Spirifer disjuncta Sowerby
USNM PAL13841A C. Walcott
United States, Nevada, Eureka District
USNM:PAL
Neospirifer alotus Dunbar & Condra
USNM PAL380722 Cooper & Main
United States, Illinois, Monroe County
USNM:PAL
Spirifer disjunctus var. animasensis Girty
USNM PAL180938 G. Eldridge
United States, Colorado, Gunnison County
USNM:PAL
Neospirifer formulosus Cooper & Grant
USNM PAL152909I
United States, Texas, Brewster County
USNM:PAL
Neospirifer bakeri columbarius Cooper & Grant
USNM PAL152905E
United States, Texas, Brewster County
USNM:PAL
Spirifer marcyi zeta Williams
USNM PAL59622
USNM:PAL
Prospira greenockensis (Brown)
USNM PAL176852
United States, Iowa, Pocahontas County
USNM:PAL
Spirifer rockymontanus Marcou
USNM PAL8488A Wheeler Survey 1871-00-00
United States, New Mexico
USNM:PAL
Eliva inflata Cooper & Grant
USNM PAL152887H
United States, New Mexico, Eddy County
USNM:PAL
Spirifer striatus (Martin)
USNM PAL181248 Wheeler Survey 1871-00-00
United States, New Mexico
USNM:PAL
Spirifer brazerianus Girty
USNM PAL118657
USNM:PAL
Neospirifer bakeri columbarius Cooper & Grant
USNM PAL154602F
United States, Texas, Brewster County
USNM:PAL
Spirifer arenosus unicus (Conrad)
USNM PAL56710
USNM:PAL
Spirifer (Delthyris) mesacostalis Hall
USNM PAL177345 Maryland Geological Survey
United States, Pennsylvania
USNM:PAL
Neospirifer amphigyus Cooper & Grant
USNM PAL152894F
United States, Texas, Brewster County
USNM:PAL
Parallelora marionensis (Hall)
USNM PAL181168
United States, Missouri
USNM:PAL
Spirifer cameratus Morton
USNM PAL181236 Wheeler Survey 1871-00-00
United States, Arizona
USNM:PAL
Spirifer mucronatus var. posterus Hall & Clarke
USNM PAL177023 Maryland Geological Survey
United States, Maryland, Washington County
USNM:PAL
Spirifer striatiformis Meek
USNM PAL98061A Butts & Pohl
United States, Virginia, Tazewell County
USNM:PAL
Neospirifer formulosus Cooper & Grant
USNM PAL152906A
United States, Texas, Brewster County
USNM:PAL
Neospirifer Stehli & Grant
USNM PAL163590 F. Stehli
Guatemala, Huehuetenango
USNM:PAL
Spirifer iowensis Owen
USNM PAL17925
USNM:PAL
Spirifer audacula (Conrad)
USNM PAL136812
USNM:PAL
Spirifer opimus var. occidentalis Girty
USNM PAL118717
USNM:PAL
Spirifer (Trigonotreta) argentarius Meek
USNM PAL124511
USNM:PAL
Spirifer Girty
USNM PAL61928 1904-00-00
China, East Ssi-Chuan
USNM:PAL
Spirifera neglecta (Hall)
USNM PAL14325 C. Walcott
United States, Nevada, Eureka District
USNM:PAL
Neospirifer thescelus Cooper & Grant
USNM PAL152916Q
United States, Texas, Brewster County
USNM:PAL
Spirifera (Martinia) undifera (Roemer)
USNM PAL5897
USNM:PAL
Spirifer crispus (Hisinger)
USNM PAL62920
USNM:PAL
Spirifera engelmanni Meek
USNM PAL627A
USNM:PAL
Eliva shumardi Cooper & Grant
USNM PAL154569A
United States, Texas, Culberson County
USNM:PAL
Spirifer whitneyi animasensis (Girty)
USNM PAL62033B Unknown
United States, Colorado
USNM:PAL
Spirifer pennatus Owen
USNM PAL17920
USNM:PAL
Spirifer sp b Girty
USNM PAL183552 1904-00-00
China, East Ssi-Chuan
USNM:PAL
Spirifer (Delthyris) vanuxemi Hall
USNM PAL176946 Maryland Geological Survey
United States, West Virginia, Morgan County
USNM:PAL
Spirifer occidentalis Girty
USNM PAL263352 J. Gehrig 1953-07-00
United States, New Mexico, Sierra County
USNM:PAL
Neospirifer mansuetus Cooper & Grant
USNM PAL152912A
United States, Texas, Brewster County
USNM:PAL
Spirifer mexicanus Girty
USNM PAL179810 Girty 1901-10-02
United States, Texas, Culberson County
USNM:PAL
Spirifer divaricata Hall
USNM PAL71590 C. Butts
United States, Alabama, St. Clair County
USNM:PAL
Neospirifer bakeri bakeri King
USNM PAL152904M
United States, Texas, Brewster County
USNM:PAL
Neospirifer thescelus Cooper & Grant
USNM PAL152918C
United States, Texas, Brewster County
USNM:PAL
Ectochoristites inflatus Carter
USNM PAL154836 Cooper & Cloud 1946-00-00
United States, Texas, McCulloch County