1. Species Plagiocardium abundans (Liverovskaya, 1939) †
2. Species Plagiocardium degrangei (Cossmann, 1896) †
3. Species Plagiocardium golubiatnikovi (Andrusov, 1905) †
4. Species Plagiocardium granulosum (Lamarck, 1805) †
5. Species Plagiocardium kartalinicum Popov, 1993 †
6. Subgenus Plagiocardium (Schedocardia) R. B. Stewart, 1930 † accepted as Schedocardia R. B. Stewart, 1930 † (unaccepted > superseded combination)
7. Species Plagiocardium fraseri (Garrard, 1963) accepted as Maoricardium setosum (Redfield, 1846)
8. Species Plagiocardium frazeri [sic] accepted as Plagiocardium fraseri (Garrard, 1963) accepted as Maoricardium setosum (Redfield, 1846) (unaccepted > misspelling - incorrect subsequent spelling)
9. Species Plagiocardium golubiatnikowi (Andrusov, 1905) † accepted as Plagiocardium golubiatnikovi (Andrusov, 1905) † (unaccepted > misspelling - incorrect original spelling)
10. Species Plagiocardium hirsutum (Bronn, 1831) † accepted as Afrocardium hirsutum (Bronn, 1831) † (unaccepted > superseded combination)
11. Species Plagiocardium papillosum (Poli, 1795) accepted as Papillicardium papillosum (Poli, 1791) (unaccepted > superseded combination)
12. Species Plagiocardium pseudolatum (Voskuil & Onverwagt, 1991) accepted as Maoricardium pseudolatum Voskuil & Onverwagt, 1991 (unaccepted > superseded combination)
13. Species Plagiocardium pseudolima (Lamarck, 1819) accepted as Maoricardium pseudolima (Lamarck, 1819) (unaccepted > superseded combination)
14. Species Plagiocardium setosum (Redfield, 1848) accepted as Maoricardium setosum (Redfield, 1846) (unaccepted > superseded combination)
15. Species Plagiocardium simile (Milaschewitsch, 1909) accepted as Parvicardium simile (Milaschewitsch, 1909) accepted as Papillicardium simile (Milaschewitsch, 1909) (unaccepted > superseded combination)

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