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Nannoceratopsis gracilis ssp. obsoletus
| gracilis ssp. obsoletus | |
| Prauss, M. (1989) | |
| Ilyina, V.I., Kulkova, I.A. and Lebedeva, N.K. (1994) | |
| junior synonym | |
| gracilis ssp. obsoletus | |
| Prauss, M. (1989) | |
| Ilyina, V.I., Kulkova, I.A. and Lebedeva, N.K. (1994) | |
| junior synonym | |