These animals are exclusively colonial filter feeders with many different body shapes; including sticks, fans, sheets, and buttons.

Classes:

Stenolaemata- Good fossil record.                

Gymnolaemata- Usually soft bodied and has a poor fossil record.

Above: Genus Heterotrypa
Below: Genus Archimedes

Above: Genus Fenestella
Below: Genus Prasopora

For more information:

http://www.ucmp.berkeley.edu/bryozoa/bryozoa.html

http://palaeo.gly.bris.ac.uk/Palaeofiles/Fossilgroups/bryozoa_final/index.html