1. Species Pecten (Entolium) ceruleus J. P. Smith, 1927 † accepted as Entolium ceruleum (J. P. Smith, 1927) † (unaccepted > superseded combination)
2. Species Pecten (Entolium) decoratiformis Krumbeck, 1924 † accepted as Camptonectes (Annulinectes) decoratiformis (Krumbeck, 1924) † represented as Camptonectes decoratiformis (Krumbeck, 1924) † (unaccepted > superseded combination)
3. Species Pecten (Entolium) erraticus Fiebelkorn, 1893 † accepted as Entolium orbiculare (J. Sowerby, 1817) † (unaccepted > junior subjective synonym)
4. Species Pecten (Entolium) fraiponti Rollier, 1915 † accepted as Entolium lunare (F. A. Roemer, 1839) † (unaccepted > junior subjective synonym)
5. Species Pecten (Entolium) giengensis Rollier, 1911 † accepted as Entolium corneolum (G. Young & J. Bird, 1828) † (unaccepted > junior subjective synonym, tentative junior subjective synonym)
6. Species Pecten (Entolium) gothicus Krause, 1908 † accepted as Entolium orbiculare (J. Sowerby, 1817) † (unaccepted > junior subjective synonym)
7. Species Pecten (Entolium) kellneri Kittl, 1904 † accepted as Entolium kellneri (Kittl, 1904) † (unaccepted > superseded combination)
8. Species Pecten (Entolium) kolymaensis Kiparisova, 1947 † accepted as Entolium kolymaense (Kiparisova, 1947) † (unaccepted > superseded combination)
9. Species Pecten (Entolium) lavaredanus Frech, 1904 † accepted as Entolioides lavaredanus (Frech, 1904) † (unaccepted > superseded combination)
10. Species Pecten (Entolium) pervulgatus Bittner, 1902 † accepted as Leptochondria pervulgata (Bittner, 1902) † (unaccepted > superseded combination)
11. Species Pecten (Entolium) pittensis J. P. Smith, 1927 † accepted as Camptonectes (Annulinectes) pittensis (J. P. Smith, 1927) † represented as Camptonectes pittensis (J. P. Smith, 1927) † (unaccepted > superseded combination)
12. Species Pecten (Entolium) pusillulus Griepenkerl, 1889 † accepted as Syncyclonema haggi Dhondt, 1971 † accepted as Syncyclonema matheroniana (A. d'Orbigny, 1850) † (unaccepted > junior subjective synonym, tentative junior subjective synonym)
13. Species Pecten (Entolium) theodosianus Retowski, 1893 † accepted as Entolium orbiculare (J. Sowerby, 1817) † (unaccepted > junior subjective synonym, tentative junior subjective synonym)
14. Species Pecten (Entolium) tommasii Parona, 1889 † accepted as Entolium hallense (Wöhrmann, 1889) † (unaccepted > junior subjective synonym)
15. Species Pecten (Entolium) valauryense Lanquine, 1929 † accepted as Entolium corneolum (G. Young & J. Bird, 1828) † (unaccepted > junior subjective synonym)
16. Species Pecten (Entolium) yukonensis J. P. Smith, 1927 † accepted as Entolium yukonense (J. P. Smith, 1927) † (unaccepted > superseded combination)

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