Flustridae Fleming, 1828

Colony erect with broad or narrow flattened fronds arising from an encrusting base, or wholly encrusting. Fronds uni-or bilamellar. Zooids not heavily calcified, generally rectangular, with a wholly membranous frontal surface, or with a short gymnocyst. Spines present or absent. Avicularia vicarious or interzooidal or absent. Ovicell endozooidal or lacking. (Gordon 1984)

This family includes the genera:

1. Austroflustra (Family uncertain?)
2. Carbasea
3. Chartella
4. Flustra
5. Gregarinidra
6. Hincksina
7. Hincksinoflustra
8. Isoseculiflustra
9. Klugeflustra (Family uncertain?)
10. Membraniporopsis
11. Nematoflustra
12. Neoflustra (Family uncertain?)
13. Retiflustra
14. Sarsiflustra
15. Securiflustra
16. Serratiflustra
17. Sinoflustra
18. Spiralaria
19. Terminoflustra

Carbasea indivisa A colour photograph by Karen Gowlett-Holmes is available.	Flustra foliacea (Andrew Grischenko photo	Gregarinidra serrata	Hincksinoflustra denticulata
Membraniporopsis bifloris	Membraniporopsis tubigera	Retiflustra cornea	Retiflustra reticulum (Jan Watson underwater photo)
Sinoflustra annae	Spiralaria florea (Jan Watson underwater photo)

Hincksina page at NMITA

Flustra foliacea at Encyclopedia of Marine Life of Britain and Ireland.
Chartella papyracea at Encyclopedia of Marine Life of Britain and Ireland.
Securiflustra securifrons at Encyclopedia of Marine Life of Britain and Ireland.

Carbasea carbasea page at UWPhoto, Norway

Flustra foliacea at the Marine Life of the Channel Islands site.

Securiflustra securifrons plus a second photo at Frank Emil Moen's site in Norway (Many underwater photographs of Norwegian Bryozoa)