MahaUpa

Devi Bhagavata Purana, 

1. Vayu Purana, 
2. Matsya Purana, and 
3. Aditya Upa Purana admit the Devi Bhagavata Purana as a Mahapurana, 

whereas the 

1. Padma Purana, 
2. Garuda Purana and 
3. Kurma Purana consider it an Upapurana.