- from the
original on 1 June 2018.
Retrieved 13
October 2012. Chinnappa,
Chopparapu; Rajanikanth, Annamraju;
Pauline Sabina,
Kavali (2019). "Palaeofloras...
- doi:10.1016/S1367-9120(02)00052-4.
Retrieved 16 June 2023. Chinnappa,
Chopparapu; Rajanikanth, Annamraju;
Pauline Sabina,
Kavali (2019). "Palaeofloras...
- Botany. 94 (9): 831–845. doi:10.1139/cjb-2016-0061. hdl:11336/40558.
Chopparapu Chinnappa;
Annamraju Rajanikanth (2016). "A new
species of Circoporoxylon...
- Part II—Araucarioxylon
hoodii sp. nov". The Palaeobotanist. 42: 1–7.
Chopparapu Chinnappa;
Annamraju Rajanikanth;
Kavali Pauline Sabina (2019). "Palaeofloras...