Fragments of cribrate colonies belonging to different bryozoan higher taxa showing the striking convergence in colony-form. All photographs are at the same scale. a
Adeona albida Kirchenpauer, 1880 (Cheilostomata, Adeonidae), Recent, Australia, NHM 83.10.15.2. b
Nudicella cribriforma Schmidt and Bone, 2004 (Cheilostomata, Onychocellidae), Eocene (Tortachilla Fm), Maslin Beach, South Australia, NHM BZ5835. c
Aspidostoma livida Hayward & Cook, 1983 (Cheilostomata, Aspidostomatidae), Recent, South Africa, NHM 1983.11.5.3. d
Dimorphocella moderna Hayward & Cook, 1983 (Cheilostomata, Adeonidae), Recent, South Africa, NHM 1983.11.5.24. e
Clathropora intertexta Nicholson, 1874 (Cryptostomata, Ptilodictyidae), Devonian (Hamilton Group), Arkona, Ontario, Canada, NHM PD2103. f
Stictoporellina sp. (Cryptostomata, Stictoporellidae), Ordovician (Wesinberg Limestone), Pechurki Limestone Quarry, Leningrad Oblast, Russia, NHM BZ5836. g
Coscinotrypa cribriformis (Prout, 1859) (Cystoporata, Hexagonellidae), Devonian (Hamilton Group), Falls of the Ohio, Indiana, USA, NHM D5761