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Swiss Journal of Palaeontology
Fig. 4 | Swiss Journal of Palaeontology

Fig. 4

From: A new bryozoan genus from the Jurassic of Switzerland, with a review of the cribrate colony-form in bryozoans

Fig. 4

Scanning electron micrographs showing lacunae and zooids in cribrate colonies belonging to different higher taxa of bryozoans. a Stictoporellina sp. (Cryptostomata, Stictoporellidae), Ordovician (Wesinberg Limestone), Pechurki Limestone Quarry, Leningrad Oblast, Russia, NHM BZ5837; note subcircular autozooidal apertures. b, c Coscinotrypa cribriformis (Prout, 1859) (Cystoporata, Hexagonellidae), Devonian (Hamilton Group), Falls of the Ohio, Indiana, USA, NHM D5761; silicified colony with stereom surrounding the lacuna (b), and forming a macula (c, right). d Aspidostoma livida Hayward & Cook, 1983 (Cheilostomata, Aspidostomatidae), Recent, South Africa, NHM 1983.11.5.3; note kenozooids lining lacuna. e Dimorphocella moderna Hayward & Cook, 1983 (Cheilostomata, Adeonidae), Recent, South Africa, NHM 1983.11.5.24; autozooids have a conspicuous orificial sinus and most are associated with an elongate avicularium. f Adeona wilsoni (MacGillivray, 1881), Recent, Port Western, Australia, NHM 99.7.1.58; kenozooids are developed around the lacuna. Scale bars 500 μm

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