Pecten aldrovandi Defrance, 1826 † accepted as Manupecten aldrovandi (Defrance, 1826) † (original description)
Pecten araneosus Defrance, 1826 † accepted as Pecten acuticosta Lamarck, 1819 † accepted as Pseudopecten equivalvis (J. Sowerby, 1816) † (original description)
Pecten beauvoisii Defrance, 1826 † (original description)
Pecten beraudi Defrance, 1826 † (original description)
Pecten bistriatus Defrance, 1826 † (original description)
Pecten brocchii Defrance, 1826 † accepted as Pecten anisopleurus Locard, 1888 accepted as Flexopecten glaber glaber (Linnaeus, 1758) accepted as Flexopecten glaber (Linnaeus, 1758) (original description)
Pecten brongniarti Defrance, 1826 † (original description)
Pecten concentricus Defrance, 1826 † accepted as Entolium orbiculare (J. Sowerby, 1817) † (original description)
Pecten cortesii Defrance, 1826 † (original description)
Pecten costarius Defrance, 1826 † (original description)
Pecten crispus Defrance, 1826 † (original description)
Pecten extensus Defrance, 1826 † (original description)
Pecten fallax Defrance, 1826 † accepted as Amussiopecten burdigalensis (Lamarck, 1806) † (original description)
Pecten faujasii Defrance, 1826 † accepted as Lyriochlamys faujasii (Defrance, 1826) † (original description)
Pecten flabellum Defrance, 1826 † accepted as Pecten alessii R. A. Philippi, 1836 † (original description)
Pecten fragilis Defrance, 1826 † (original description)
Pecten fragilissimus Defrance, 1826 † (original description)
Pecten funiculatus Defrance, 1826 † accepted as Pecten vimineus J. De C. Sowerby, 1826 † accepted as Chlamys textoria (Schlotheim, 1820) † (original description)
Pecten gervilii Defrance, 1826 † accepted as Chlamys valoniensis (Defrance, 1825) † (original description)
Pecten gibbus Defrance, 1826 † (original description)
Pecten gratissimus Defrance, 1826 † accepted as Pecten beudanti Basterot, 1825 † (original description)
Pecten hoeninghausi Defrance, 1826 † accepted as Hilberia hoeninghausi (Defrance, 1826) † (original description)
Pecten incertus Defrance, 1826 † (original description)
Pecten incrustatus Defrance, 1826 † accepted as Parvamussium pumilum (Lamarck, 1819) † (original description)
Pecten laevis Defrance, 1826 † accepted as Pecten silenus A. d'Orbigny, 1850 † accepted as Entolium corneolum (G. Young & J. Bird, 1828) † (original description)
Pecten laganum Defrance, 1826 † (original description)
Pecten laganum Defrance, 1826 † (status source)
Pecten lamarckii Defrance, 1826 † (original description)
Pecten michauxii Defrance, 1826 † (original description)
Pecten obliquissimus Defrance, 1826 † (status source)
Pecten obliquissimus Defrance, 1826 † (original description)
Pecten orphanus Defrance, 1826 † (original description)
Pecten rusticus Defrance, 1826 † (original description)
Pecten subacutus Defrance, 1826 † (original description)
Pecten sublevis Defrance, 1826 † (original description)
Pecten tricarinatus Defrance, 1826 † (original description)
Pecten uncinatus Defrance, 1826 † accepted as Flexopecten palmatus (Lamarck, 1806) † (original description)
Pecten undatus Defrance, 1826 † (original description)

France for Pecten aldrovandi Defrance, 1826 † 
France for Pecten araneosus Defrance, 1826 † 
France for Pecten beraudi Defrance, 1826 † 
France for Pecten brongniarti Defrance, 1826 † 
France for Pecten fallax Defrance, 1826 † 
France for Pecten fragilissimus Defrance, 1826 † 
France for Pecten gervilii Defrance, 1826 † 
France for Pecten gibbus Defrance, 1826 † 
France for Pecten gratissimus Defrance, 1826 † 
France for Pecten incertus Defrance, 1826 † 
France for Pecten incrustatus Defrance, 1826 † 
France for Pecten laevis Defrance, 1826 † 
France for Pecten subacutus Defrance, 1826 † 
Great Britain for Pecten fragilissimus Defrance, 1826 † 
Italy for Pecten bistriatus Defrance, 1826 † 
Italy for Pecten brocchii Defrance, 1826 † 
Italy for Pecten cortesii Defrance, 1826 † 
Italy for Pecten costarius Defrance, 1826 † 
Malta for Pecten lamarckii Defrance, 1826 † 
Netherlands for Pecten faujasii Defrance, 1826 † 
Netherlands for Pecten fragilis Defrance, 1826 † 
North Carolina for Pecten michauxii Defrance, 1826 † 
Virginia for Pecten beauvoisii Defrance, 1826 † 

 Homonymy

 for Pecten incertus Tenison Woods, 1865 †

Invalid: junior homonym of Pecten incertus Defrance, 1826 [details]

 Homonymy

 for Pecten lamarckii Chenu, 1843

Invalid: junior homonym of Pecten lamarckii Defrance, 1826 [details]

 Homonymy

 for Pecten sublaevis F. A. Roemer, 1836 †

Invalid: junior homonym of Pecten sublevis [sic] Defrance, 1826 (see ICZN Art. 58.1) and Pecten sublaevis G. Young ... [details]

 Homonymy

 for Pecten sublaevis G. Young & Bird, 1828 †

Invalid: junior homonym of Pecten sublevis [sic] Defrance, 1826 (see ICZN Art. 58.1). [details]

 Original description

 for Pecten incertus Defrance, 1826 †

Defrance (1826) referred the species to Brongniart, "Min. des env. de Paris, pl. 3, fig. 9" (probably Cuvier & ... [details]

 Spelling

 for Pecten gervilii Defrance, 1826 †

Species name might be considered an incorrect original spelling, since the species is named after Gerville. ... [details]

 Type locality

 for Pecten obliquissimus Defrance, 1826 †

"Localité inconnue" [locality unknown] [details]

 Type locality

 for Pecten sublevis Defrance, 1826 †

"Localité inconnue; dans la craie tufau." [details]

 Type locality

 for Pecten tricarinatus Defrance, 1826 †

Locality unknown. Depéret (1904) hypothesized it might be Touraine or Anjou. [details]

 Type locality

 for Pecten uncinatus Defrance, 1826 †

"Localité inconnue; dans un grès grossier." [details]