Petasosella moderna is found from the Recent off southern Australia,
Original description: Petasosella moderna Bock & Cook, 1998
Locality: Bass Strait, Australia
Holotype: NHM 1984.12.12.29 part.
Reference: Bock, P.E. & Cook, P.L., 1998. Otionellidae, a new family including five genera of free-living lunulitiform Bryozoa (Cheilostomatida). Memorie di Scienze Geologiche 50: 195-211.