Petasosella parkeri is found from the Recent off southern Australia,
Original description: Petasosella parkeri Bock & Cook, 1998
Locality: Great Australian Bight, Australia
Holotype: MOV P83522.
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.