1. Subspecies Rotalia beccarii subsp. karadagica (Dolgopolskaya & Pauli, 1931) accepted as Ammonia karadagica (Dolgopolskaya & Pauli, 1931) (Rotalia beccarii is the type species of Ammonia.)
2. Variety Rotalia beccarii var. annectens Parker & Jones, 1865 accepted as Rotalia annectens Parker & Jones, 1865 accepted as Rotalidium annectens (Parker & Jones, 1865)
3. Variety Rotalia beccarii var. dentata Parker & Jones, 1865 accepted as Asterorotalia dentata (Parker & Jones, 1865) (Opinion of Billman et al. (1980))
4. Variety Rotalia beccarii var. flevensis Hofker, 1930 accepted as Ammonia flevensis (Hofker, 1930)
5. Variety Rotalia beccarii var. parkinsoniana (d'Orbigny, 1839) accepted as Streblus parkinsonianus (d'Orbigny, 1839) accepted as Ammonia parkinsoniana (d'Orbigny, 1839) (Opinion of Hofker (1964))
6. Variety Rotalia beccarii var. sobrina Shupack, 1934 accepted as Ammonia sobrina (Shupack, 1934)
7. Variety Rotalia beccarii var. tepida Cushman, 1926 accepted as Ammonia tepida (Cushman, 1926)
8. Variety Rotalia beccarii var. craticulata Parker & Jones, 1865 (uncertain > nomen dubium, Type specimen from Fiji is an aberrant trochospiral form of an Elphidium (B. Hayward pers. obs. 2020))
9. Variety Rotalia beccarii var. risilla Didkovskiy, 1959 (uncertain > taxon inquirendum, Not figured and very succinctly described ["Rotalia beccarii (L.) var. risilla var. n. which has very small size shell without any surface ornamentation"~nomen nudum])

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