Homalopoma baculum, common name the berry dwarf turban, is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.Rosenberg, G. (2012). Homalopoma baculum (Carpenter, 1864). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=528064 on 2013-02-10Turgeon, D.D., et al. 1998. Common and scientific names of aquatic invertebrates of the United States and Canada. American Fisheries Society Special Publication 26
Description The height of the shell varies between 3.5 mm and 8 mm. The small, rufous ashy shell has a depressed-globose shape. It is solid and imperforate. It contains four slightly convex whorls that are rapidly increasing. The sculpture is obsoletely but regularly spirally striate. The large aperture is oblique and deflexed above.G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia (described as Leptothyra bacula)
Distribution This common marine species occurs between tides and under rocks in the Salish Sea, Northwest America to Baja California, Mexico.
References
External links Barcode of Life (2 barcodes) Biodiversity Heritage Library (3 publications) Encyclopedia of Life USNM Invertebrate Zoology Mollusca Collection USNM Invertebrate Zoology Mollusca Collection ITIS World Register of Marine Species