Puellina praecox is an encrusting bryozoan. Colonies form irregular patches, composed of a single layer of autozooids. This species is very small; the largest known specimen consists of approximately 20 autozooids. Autozooids are irregular, oval, convex and clearly separated. They range in size from0.14-0.30 by 0.10-0.19 mm. Five spines are present in non-reproductive zooids, and four in reproductive zooids (with an ovicell).
The species is able to colonise shells and hard substrates. It has been recorded at depths of 73-99 metres. Puellina praecox is found as a fossil in the Pleistocene Red Crag of East Anglia, and is only known as a living bryozoan from a few localities off the English Channel coast of Brittany; from the Irish Seam and off Antrim.
Puellina praecox closely resembles Puellina bifida, however P. praecox is less heavily calcified than P. bifida
- Hayward, P.J. (2001). Bryozoa, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 325-333 http://www.marinespecies.org/aphia.php?p=sourcedetails&id=1369
- De Blauwe, H. (2009). Mosdiertjes van de Zuidelijke Bocht van de Noordzee. Determinatiewerk voor België en Nederland. Uitgave Vlaams Instituut voor de Zee, Oostende: 464pp. http://www.marinespecies.org/aphia.php?p=sourcedetails&id=130048
- MEDIN (2011). UK checklist of marine species derived from the applications Marine Recorder and UNICORN, version 1.0. http://www.marinespecies.org/asteroidea/aphia.php?p=sourcedetails&id=149081