Table 2. Absolute and proportional areas of lacunae in cribrate bryozoan colonies from the collections of the NHM and from published illustrations.

Genus/species / order / source / minimum lacuna area (mm) / maximum lacuna area (mm) / mean lacuna area (mm) / proportional lacuna area
Coscinotrypa cribriforme / Cystoporata / NHM D5761. Devonian, Hamilton Group, Indiana, USA / 1.249 / 2.603 / 1.785 / 0.081
Etherella porosa / Cystoporata / Utgaard 1983, fig. 212, 2. Permian, Fitzroy Basin, Western Australia / 13.078 / 18.484 / 15.168 / 0.223
Stictoporellina sp. / Cryptostomata / NHM BZ5838. Ordovician, Caradoc, Wesinberg Limestone, Pechurki Limestone Quarry, Leningrad Oblast, Russia / 3.113 / 6.587 / 5.157 / 0.241
Clathropora frondosa / Cryptostomata / NHM D5111. Silurian, Wenlock, Lockport, New York State, USA / 1.479 / 2.357 / 1.980 / 0.089
Clathropora frondosa / Cryptostomata / NHM D5110. Silurian, Wenlock, Lockport, New York State, USA / 0.664 / 4.275 / 1.893 / 0.111
Clathropora frondosa / Cryptostomata / NHM PD2188. Devonian. Heldeberg Series, Indiana, USA / 1.379 / 4.39 / 2.532 / 0.120
Clathropora frondosa / Cryptostomata / NHM D5109. Silurian, Clinton Group, Dayton, Ohio / 1.102 / 2.161 / 1.541 / 0.156
Clathropora intermedia / Cryptostomata / NHM PD731. Silurian. Wenlock, Grimsby, Ontario, Canada / 1.911 / 6.377 / 3.207 / 0.222
Clathropora intermedia / Cryptostomata / NHM PD701. Silurian, Wenlock, Lockport, New York State, USA / 1.967 / 8.111 / 4.139 / 0.239
Clathropora intertexta / Cryptostomata / NHM PD2104. Devonian (Hamilton Group), Arkona, Ontario, Canada / 1.078 / 1.868 / 1.518 / 0.063
Clathropora intertexta / Cryptostomata / NHM PD2103. Devonian (Hamilton Group), Arkona, Ontario, Canada / 1.483 / 6.395 / 4.439 / 0.176
Coscinella elegantula / Cryptostomata / Karklins 1983, fig 249, 1b. Devonian, Hamilton Group, Ontario, Canada / 3.016 / 5.681 / 4.349 / 0.103
Oanduellina bella / Cryptostomata / Goryunova & Lavrentjeva 1993, pl. 8, fig. 2 / 1.483 / 4.031 / 3.041 / 0.165
Phaenoporella_transenna / Cryptostomata / Goryunova & Lavrentjeva 1993, pl. 20, fig. 4 / 1.113 / 5.842 / 3.771 / 0.139
Prophyllodictya intermedia / Cryptostomata / Goryunova & Lavrentjeva 1993, pl. 1, fig. 1 / 4.868 / 14.68 / 7.746 / 0.157
Sibredictya usitata / Cryptostomata / Karklins 1983, fig 256, 1b. Ordovician, Siberia / 0.336 / 1.705 / 1.068 / 0.072
Rorypora retiformis / Cyclostomata / PIMUZ 6791. Jurassic, Aalenian, Murchisonae-Schichten, Gelterkinden, Switzerland / 0.961 / 1.767 / 1.451 / 0.119
Aspidostoma sp. / Cheilostomata, Anasca / NHM D33061. Miocene, Victoria, Australia / 0.384 / 14.497 / 3.047 / 0.062
Aspidostoma sp. / Cheilostomata, Anasca / NHM D33074. Miocene, Victoria, Australia / 30.72 / 32.209 / 31.465 / 0.223
Aspidostoma livida / Cheilostomata, Anasca / NHM 1983.11.5.24. Recent, South Africa / 0.251 / 2.775 / 1.908 / 0.079
Nudicella cribriforma / Cheilostomata, Anasca / NHM D33053. Miocene, Aldinga, South Australia / 1.945 / 2.99 / 2.363 / 0.045
Dimorphocella moderna / Cheilostomata, Ascophora / NHM 1983.11.5.3 (a). Recent, South Africa / 0.17 / 1.685 / 0.806 / 0.061
Dimorphocella moderna / Cheilostomata, Ascophora / NHM 1983.11.5.3 (b). Recent, South Africa / 0.167 / 2.034 / 1.317 / 0.103
Adeona cellulosa / Cheilostomata, Ascophora / NHM 99.7.1 (a). Recent, Australia / 0.677 / 3.084 / 1.748 / 0.069
Adeona cellulosa / Cheilostomata, Ascophora / NHM 99.7.1 (b). Recent, Australia / 1.07 / 2.695 / 1.718 / 0.077
Adeona wilsoni / Cheilostomata, Ascophora / NHM 99.7.1.58 (a). Recent, Australia / 0.516 / 2.341 / 1.504 / 0.072
Adeona wilsoni / Cheilostomata, Ascophora / NHM 99.7.1.58 (b). Recent, Australia / 0.681 / 2.909 / 1.765 / 0.060
Adeona albida / Cheilostomata, Ascophora / NHM 83.10.15.2. Recent, Australia / 0.331 / 2.137 / 1.399 / 0.056
Adeona grisea / Cheilostomata, Ascophora / NHM 66.6.22.6. Recent, Australia / 0.194 / 0.692 / 0.421 / 0.033

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