Miocene fossil from Victoria, Australia
Reference: Bock, P.E. & Cook, P.L. (1995). Chasmazoon gen. nov., a new genus of ascophoran bryozoan for Cellepora abdita MacGillivray, from the Tertiary of Victoria. Alcheringa 19: 113-117.
Note that the direction of colony growth (astogenetic distal) is downwards; while the zooid distal direction is upwards.
Original Description: Cellepora abdita MacGillivray, 1895
Locality: "Schnapper Point" (= Balcombe Bay?), Mornington, Vic.
Type Specimen: NMV P27778