Actually the spit of the old Pimelodidae into Heptapteridae, a new restricted Pimelodidae and Pseudopimelodae has been formally published in:

Check List of the Freshwater Fishes of South and Central America. 2003. (R. Reis, S. Kullander, & C. Ferraris, Jr., eds.), EDIPUCRS, Porto Alegre, 742 p.