Sea-Beach at Ebb-Tide ; New York : Century Co., 1903, page 195
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{{Information |Description={{en|1=Spiral tufted bryozoa (Bugula turrita)}} |Source=University of Washington Libraries [http://content.lib.washington.edu/cdm4/item_viewer.php?CISOROOT=/fishimages&CISOPTR=52608&CISOBOX=1&REC=15] |Author=Arnold, Augusta Foot