1. Species Nucula (Leionucula) cecileana (A. d'Orbigny, 1843) † accepted as Leionucula cecileana (A. d'Orbigny, 1843) † (unaccepted > superseded combination)
2. Species Nucula (Leionucula) ceciliana † accepted as Nucula (Leionucula) cecileana (A. d'Orbigny, 1843) † accepted as Leionucula cecileana (A. d'Orbigny, 1843) † (unaccepted > misspelling - incorrect subsequent spelling)
3. Species Nucula (Leionucula) devjatilovae Kafanov, Ogasawara & Marincovich, 2001 † accepted as Leionucula devjatilovae (Kafanov, Ogasawara & Marincovich, 2001) †
4. Species Nucula (Leionucula) faba F.-S. Xu, 1999 accepted as Ennucula faba (F.-S. Xu, 1999) (superseded combination)
5. Species Nucula (Leionucula) hunickeni Zinsmeister & Macellari, 1988 † accepted as Leionucula hunickeni (Zinsmeister & Macellari, 1988) †
6. Species Nucula (Leionucula) leptodonta F. R. Bernard, 1983 accepted as Ennucula tenuis (Montagu, 1808)
7. Species Nucula (Leionucula) nova Wilckens, 1910 † accepted as Leionucula nova (Wilckens, 1910) †
8. Species Nucula (Leionucula) palmeri Zinsmeister, 1984 † accepted as Leionucula palmeri (Zinsmeister, 1984) †
9. Species Nucula (Leionucula) parvula Devjatilova, 1981 † accepted as Nucula (Leionucula) devjatilovae Kafanov, Ogasawara & Marincovich, 2001 † accepted as Leionucula devjatilovae (Kafanov, Ogasawara & Marincovich, 2001) † (unaccepted > junior homonym, invalid: junior homonym of Nucula parvula Gould, 1861; Nucula (Leionucula) devjatilovae is a replacement name)
10. Species Nucula (Leionucula) subaraucana Frassinetti, 1997 † accepted as Leionucula subaraucana Frassinetti, 1997 † (unaccepted > superseded combination)
11. Species Nucula (Leionucula) suboblonga (Wilckens, 1907) † accepted as Leionucula suboblonga (Wilckens, 1907) †
12. Species Nucula (Leionucula) yaquinae F. R. Bernard, 1983 accepted as Ennucula cardara (Dall, 1916)

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