Answer:
The Upapurāṇas are lesser or ancillary texts: these are sometimes also said to be eighteen in number, with still less agreement as to the canonical titles. Few have been critically edited. They include: Sanat-kumara, Narasimha, Brihan-naradiya, Siva-rahasya, Durvasa, Kapila, Vamana, Bhargava, Varuna, Kalika, Samba, Nandi, Surya, Parasara, Vasishtha, Devi-Bhagavata, Ganesha, Mudgala, and Hamsa