Cystoporida Explained

Cystoporida, also known as Cystoporata or cystoporates, are an extinct order of Paleozoic bryozoans in the class Stenolaemata.^[1] Their fossils are found from Ordovician to Triassic strata.^[2]

All cystoporatan bryozoan genera (around 50 or so) have a "cystopore", a chamber-like supporting structure, separated from each other by transverse septa, situated between the characteristically elongated zooecia of each individual colony.^{[3] [4]}

Families

• Acanthoceramoporellidae (Ordovician)
• Actinotrypidae (Carboniferous-Permian)
• Anolotichiidae (Ordovician)
• Botrylloporidae (Ordovician-Devonian)
• Ceramoporidae (Ordovician-Devonian)
• Constellariidae (Ordovician-Silurian)
• Cystodictyonidae (Devonian-Permian)
• Etherellidae (Permian)
• Evactinoporidae^[5] (Carboniferous-Permian)
• Fistuliporidae (Ordovician-Permian)
• Goniocladiidae (Devonian-Permian)
• Hexagonellidae (Ordovician-Permian)
• Revalotrypidae (Ordovician)
• Rhinoporidae (Ordovician-Devonian)
• Xenotrypidae (Ordovician-Silurian)

Notes and References

1. Web site: Cystoporata.
2. Pachut. J. F.. Horowitz. A. S.. 2013. Cladistic assignment of specimens to species of the cystoporate bryozoan genera Strotopora Ulrich and Cliotrypa Ulrich and Bassler using gap-coded characters. Journal of Paleontology. 87. 2. 197. 10.1666/11-125R.1.
3. Book: Fossil Invertebrates . Cambridge University Press . Lehmann, Ulrich . 1983 . 226 . 9780521270281.
4. Astrova. G.G.. 1965-09-01. A new order of Paleozoic Bryozoa. International Geology Review. 7. 9. 1622–1628. 10.1080/00206816509474214. 0020-6814.
5. Yancey. Thomas E.. Jackson. Patrick N. Wyse. Sutton. Barry G.. Gottfried. Richard J.. 2019. Evactinoporidae, a new family of Cystoporata (Bryozoa) from the Mississippian of North America: growth and functional morphology. Journal of Paleontology. en. 93. 6. 1058–1074. 10.1017/jpa.2019.62. 202176564 . 0022-3360.