Fistulipora sp., photographed by Charles Oldham.

Belongs within: Stenolaemata.
Contains: Trepostomata.

The Cystoporata are a group of bryozoans known from the Ordovician to the Triassic. Members of this group have curved partitions (cystiphragms) separating zooecia, and often crescentic projections (lunaria) around the apertures (Prothero 1998).

    |--+--Ceramoporina P98
    |  `--Trepostomata P98
    `--Fistuliporidae DX84 [Fistuliporina P98]
         |--Cyclotrypa Ulrich 1856 DX84
         |    `--C. exposita Gorjunova 1970 DX84
         |--Ramipora Toula 1875 DX84
         |    `--R. ambrosoides (Cretnall 1926) [=Aetomacladia ambrosoides] F71
         |--Meekopora Ulrich 1889 DX84
         |    |--M. densa DX84
         |    `--M. incrassata DX84
         |--Coscinotrypa Hall & Simpson 1887 DX84
         |    |--*C. cribriforme Prout 1859 DX84
         |    `--C. reticulata DX84
         `--Fistulipora McCoy 1849 RLS04
              |--F. conica Crockford 1944 F71
              |--F. corticea EB03
              |--F. crassilabiata Bassler 1929 DX84
              |--F. etheridgei Crockford 1947 F71
              |--F. heteromorpha Liu in Ding, Xia et al. 1984 DX84
              |--F. lunatifera Bassler 1929 DX84
              |--F. minisculus DX84
              |--F. stereos DX84
              `--F. zhesiensis Liu in Ding, Xia et al. 1984 DX84

Cystoporata incertae sedis:
  Pseudobatostomella Morozova 1960 [Trematoporidae] DX84
    |--P. neospinigera DX84
    |--‘Batostomella’ roborata DX84
    `--P. spinigera (Bassler 1929) [=Batostomella spinigera] DX84
  Stenoporidae DX84
    |--Stenodiscus Crockford 1945 DX84
    |    |--S. belemnos DX84
    |    |--S. giganteus Yang 1958 DX84
    |    |--S. laeviuscula (Bassler 1929) [=Stenopora laeviuscula] DX84
    |    |--S. lamellaris Yang & Loo 1962 DX84
    |    |--S. moniliformis Crockford 1945 F71
    |    `--S. stanwellensis Crockford 1947 F71
    `--Stenopora Lonsdale 1884 DX84
         |--S. angulata Yang 1958 DX84
         |--S. crinita F71
         |--S. johnstoni Etheridge 1891 F71
         |--S. ovata F71
         |--S. qaganqultensis DX84
         |--S. spicata (Bassler 1929) [=Ulrichotrypa spicata] DX84
         `--S. tasmaniensis F71

*Type species of generic name indicated


[DX84] Ding Y., Xia G., Duan C., Li W., Liu X. & Liang Z. 1984. Study on the early Permian stratigraphy and fauna in Zhesi district, Nei Mongol Zizhiqu (Inner Mongolia). Bulletin Tianjin Institure Geol. Min. Res. 10.

[EB03] Erickson, J. M., & T. D. Bouchard. 2003. Description and interpretation of Sanctum laurentiensis, new ichnogenus and ichnospecies, a domichnium mined into Late Ordovician (Cincinnatian) ramose bryozoan colonies. Journal of Paleontology 77 (5): 1002-1010.

[F71] Fletcher, H. O. 1971. Catalogue of type specimens of fossils in the Australian Museum, Sydney. Australian Museum Memoir 13: 1-167.

[P98] Prothero, D. R. 1998. Bringing Fossils to Life: An introduction to paleobiology. WCB McGraw-Hill: Boston.

[RLS04] Rigby, J. K., G. A. Linder & C. H. Stevens. 2004. A new occurrence of the “hydrozoan” Radiotrabeculopora reticulata Fan, Rigby, and Zhang, 1991 in the Permian of California. Journal of Paleontology 78 (2): 410-413.

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