Pecten (Amusium) lompocensis Arnold, 1906 † accepted as Amusium lompocensis (Arnold, 1906) † (original description)
Pecten (Chlamys) bartschi Arnold, 1906 † accepted as Chlamys bartschi (Arnold, 1906) † (original description)
Pecten (Chlamys) bellilamellatus Arnold, 1906 accepted as Leptopecten latiauratus (Conrad, 1837) (original description)
Pecten (Chlamys) branneri Arnold, 1906 † accepted as Chlamys branneri (Arnold, 1906) † (original description)
Pecten (Chlamys) calkinsi Arnold, 1906 † accepted as Chlamys calkinsi (Arnold, 1906) † (original description)
Pecten (Chlamys) hamlini Arnold, 1906 † accepted as Swiftopecten hamlini (Arnold, 1906) † (original description)
Pecten (Chlamys) hastatus albidus Arnold, 1906 accepted as Chlamys albida (Arnold, 1906) (original description)
Pecten (Chlamys) landesi Arnold, 1906 † accepted as Chlamys landesi (Arnold, 1906) † (original description)
Pecten (Chlamys) latiauritus var. cerritensis Arnold, 1906 accepted as Leptopecten latiauratus (Conrad, 1837) (original description)
Pecten (Chlamys) latiauritus var. delosi Arnold, 1906 accepted as Leptopecten latiauratus (Conrad, 1837) (original description)
Pecten (Chlamys) latiauritus var. fucicolus Dall, 1898 accepted as Leptopecten latiauratus (Conrad, 1837) (additional source)
Pecten (Chlamys) latiauritus var. monotimeris Conrad, 1837 accepted as Leptopecten latiauratus (Conrad, 1837) (additional source)
Pecten (Chlamys) lawsoni Arnold, 1906 accepted as Chlamys hastata (G. B. Sowerby II, 1842) (original description)
Pecten (Chlamys) nutteri Arnold, 1906 † accepted as Nanaochlamys nutteri (Arnold, 1906) † (original description)
Pecten (Chlamys) proavus Arnold, 1906 † accepted as Chlamys proavus (Arnold, 1906) † (original description)
Pecten (Chlamys) sespeensis Arnold, 1906 † accepted as Chlamys sespeensis (Arnold, 1906) † (original description)
Pecten (Chlamys) sespeensis var. hydei Arnold, 1906 † accepted as Chlamys sespeensis hydei (Arnold, 1906) † (original description)
Pecten (Chlamys) washburnei Arnold, 1906 † accepted as Chlamys washburnei (Arnold, 1906) † (original description)
Pecten (Chlamys) wattsi Arnold, 1906 † accepted as Swiftopecten parmeleei parmeleei (Dall, 1898) † (original description)
Pecten (Chlamys) wattsi var. morani Arnold, 1906 † accepted as Swiftopecten parmeleei etchegoini (F. M. Anderson, 1905) † (original description)
Pecten (Lyropecten) ashleyi Arnold, 1906 † accepted as Lyropecten cerrosensis (Gabb, 1866) † (original description)
Pecten (Lyropecten) bowersi Arnold, 1906 † accepted as Vertipecten bowersi (Arnold, 1906) † (original description)
Pecten (Lyropecten) crassicardo var. hamiltoni Arnold, 1906 † accepted as Lyropecten crassicardo (Conrad, 1856) † (original description)
Pecten (Lyropecten) diabloensis Arnold, 1906 † accepted as Lyropecten crassicardo (Conrad, 1856) † (basis of record)
Pecten (Lyropecten) estrellanus var. catalinae Arnold, 1906 † accepted as Lyropecten catalinae (Arnold, 1906) † (original description)
Pecten (Lyropecten) estrellanus var. terminus Arnold, 1906 † accepted as Lyropecten terminus (Arnold, 1906) † (original description)
Pecten (Lyropecten) miguelensis Arnold, 1906 † accepted as Lyropecten miguelensis (Arnold, 1906) † (original description)
Pecten (Lyropecten) perrini Arnold, 1906 † accepted as Vertipecten perrini (Arnold, 1906) † (original description)
Pecten (Lyropecten) vaughani Arnold, 1906 † accepted as Lyropecten vaughani (Arnold, 1906) † (original description)
Pecten (Patinopecten) healeyi Arnold, 1906 † accepted as Patinopecten healeyi (Arnold, 1906) † (original description)
Pecten (Patinopecten) oweni Arnold, 1906 † accepted as Pecten (Patinopecten) lohri Hertlein, 1928 † accepted as Patinopecten lohri (Hertlein, 1928) † (original description)
Pecten (Patinopecten) purisimaensis Arnold, 1906 † accepted as Lituyapecten purisimaensis (Arnold, 1906) † (original description)
Pecten (Patinopecten) turneri Arnold, 1906 † accepted as Lituyapecten turneri (Arnold, 1906) † (original description)
Pecten (Pecten) auburyi Arnold, 1906 † accepted as Euvola bella (Conrad, 1856) † (original description)
Pecten (Pecten) carrizoensis Arnold, 1906 † accepted as Euvola carrizoensis (Arnold, 1906) † (original description)
Pecten (Pecten) keepi Arnold, 1906 † accepted as Euvola keepi (Arnold, 1906) † (original description)
Pecten (Pecten) lecontei Arnold, 1906 † accepted as Euvola lecontei (Arnold, 1906) † (original description)
Pecten (Pecten) merriami Arnold, 1906 † accepted as Patinopecten caurinus (A. Gould, 1850) (original description)
Pecten (Pecten) sanctaecruzensis Arnold, 1906 † accepted as Euvola sanctaecruzensis (Arnold, 1906) † (original description)
Pecten (Pecten) vogdesi Arnold, 1906 accepted as Euvola vogdesi (Arnold, 1906) (original description)
Pecten (Plagioctenium) andersoni Arnold, 1906 † accepted as Leptopecten andersoni (Arnold, 1906) † (original description)
Pecten (Plagioctenium) andersoni var. barkerianus Arnold, 1906 † accepted as Leptopecten andersoni barkerianus (Arnold, 1906) † (original description)
Pecten (Plagioctenium) cerrosensis Gabb, 1866 † accepted as Lyropecten cerrosensis (Gabb, 1866) † (basis of record)
Pecten (Plagioctenium) cerrosensis var. mendenhalli Arnold, 1906 † accepted as Argopecten mendenhalli (Arnold, 1906) † (original description)
Pecten (Plagioctenium) cooperi Arnold, 1906 † accepted as Argopecten invalidus (G. D. Hanna, 1924) † (original description)
Pecten (Plagioctenium) eldridgei Arnold, 1906 † accepted as Argopecten ventricosus eldridgei (Arnold, 1906) † (original description)
Pecten (Plagioctenium) neahensis Arnold, 1906 † accepted as Argopecten neahensis (Arnold, 1906) † (original description)
Pecten (Propeamusium) clallamensis Arnold, 1906 † accepted as Propeamussium clallamensis (Arnold, 1906) † (original description)
Pecten (Propeamusium) riversi Arnold, 1906 † accepted as Parvamussium alaskense (Dall, 1871) (original description)
Pecten (Propeamusium) stanfordensis Arnold, 1906 † accepted as Parvamussium stanfordense (Arnold, 1906) † (original description)
Pecten (Propeamusium) waylandi Arnold, 1906 † accepted as Propeamussium waylandi (Arnold, 1906) † (original description)
Pecten (Pseudamusium) lompicoensis Arnold, 1906 † accepted as Cyclopecten lompicoensis (Arnold, 1906) † (original description)
Pecten (Pseudamusium) randolphi (Dall, 1897) accepted as Delectopecten vancouverensis (Whiteaves, 1893) (basis of record)
Pecten (Pseudamusium) randolphi var. tillamookensis Arnold, 1906 accepted as Delectopecten vancouverensis (Whiteaves, 1893) (original description)
Pecten coalingaensis Arnold, 1905 † accepted as Euvola coalingaensis (Arnold, 1905) † (redescription)

Baja California for Pecten (Lyropecten) ashleyi Arnold, 1906 † 
Baja California for Pecten (Pecten) lecontei Arnold, 1906 † 
Baja California Sur for Pecten (Plagioctenium) cerrosensis var. mendenhalli Arnold, 1906 † 
California for Pecten (Amusium) lompocensis Arnold, 1906 † 
California for Pecten (Chlamys) bartschi Arnold, 1906 † 
California for Pecten (Chlamys) bellilamellatus Arnold, 1906 
California for Pecten (Chlamys) branneri Arnold, 1906 † 
California for Pecten (Chlamys) calkinsi Arnold, 1906 † 
California for Pecten (Chlamys) hamlini Arnold, 1906 † 
California for Pecten (Chlamys) nutteri Arnold, 1906 † 
California for Pecten (Chlamys) proavus Arnold, 1906 † 
California for Pecten (Chlamys) sespeensis Arnold, 1906 † 
California for Pecten (Chlamys) sespeensis var. hydei Arnold, 1906 † 
California for Pecten (Chlamys) wattsi Arnold, 1906 † 
California for Pecten (Chlamys) wattsi var. morani Arnold, 1906 † 
California for Pecten (Lyropecten) bowersi Arnold, 1906 † 
California for Pecten (Lyropecten) crassicardo var. hamiltoni Arnold, 1906 † 
California for Pecten (Lyropecten) estrellanus var. catalinae Arnold, 1906 † 
California for Pecten (Lyropecten) estrellanus var. terminus Arnold, 1906 † 
California for Pecten (Lyropecten) miguelensis Arnold, 1906 † 
California for Pecten (Lyropecten) perrini Arnold, 1906 † 
California for Pecten (Lyropecten) vaughani Arnold, 1906 † 
California for Pecten (Patinopecten) healeyi Arnold, 1906 † 
California for Pecten (Patinopecten) oweni Arnold, 1906 † 
California for Pecten (Patinopecten) purisimaensis Arnold, 1906 † 
California for Pecten (Patinopecten) turneri Arnold, 1906 † 
California for Pecten (Pecten) auburyi Arnold, 1906 † 
California for Pecten (Pecten) carrizoensis Arnold, 1906 † 
California for Pecten (Pecten) keepi Arnold, 1906 † 
California for Pecten (Pecten) merriami Arnold, 1906 † 
California for Pecten (Pecten) sanctaecruzensis Arnold, 1906 † 
California for Pecten (Pecten) vogdesi Arnold, 1906 
California for Pecten (Plagioctenium) andersoni Arnold, 1906 † 
California for Pecten (Plagioctenium) andersoni var. barkerianus Arnold, 1906 † 
California for Pecten (Plagioctenium) cooperi Arnold, 1906 † 
California for Pecten (Plagioctenium) eldridgei Arnold, 1906 † 
California for Pecten (Propeamusium) riversi Arnold, 1906 † 
California for Pecten (Propeamusium) stanfordensis Arnold, 1906 † 
California for Pecten (Pseudamusium) lompicoensis Arnold, 1906 † 
Oregon for Pecten (Chlamys) washburnei Arnold, 1906 † 
United States part of the North Pacific Ocean for Pecten (Pseudamusium) randolphi var. tillamookensis Arnold, 1906 
Washington for Pecten (Chlamys) landesi Arnold, 1906 † 
Washington for Pecten (Plagioctenium) neahensis Arnold, 1906 † 
Washington for Pecten (Propeamusium) clallamensis Arnold, 1906 † 
Washington for Pecten (Propeamusium) waylandi Arnold, 1906 † 

 Homonymy

 for Vertipecten diabloensis (B. L. Clark, 1924) †

Replacement name for Pecten gabbi Clark, 1918, non Dall, 1898. Not a junior homonym of Pecten diabloensis "Arnold, ... [details]

 Status

 for Pecten (Lyropecten) diabloensis Arnold, 1906 †

Listed by Arnold (1906) in the synonymy list of Pecten (Lyropecten) crassicardo (Conrad, 1856) as "1904. Pecten ... [details]