Search results
Results From The WOW.Com Content Network
The Limidae or file shells are members of the only family of bivalve molluscs in the order Limida. [1] The family includes 130 living species, assigned to 10 genera . Widely distributed in all seas from shallow to deep waters, the species are usually epifaunal or nestling, with many species building byssal nests for protection.
The length of the shell can vary between 30 mm and 135 mm. [6] The flesh-colored shell is angularly marked with some large, and many small, crowded, deep chestnut lines. The fasciole is tinged with violet, with chestnut maculations.
Cercozoa (now synonymised with Filosa) [2] is a phylum of diverse single-celled eukaryotes. [4] [5] They lack shared morphological characteristics at the microscopic level, [6] and are instead united by molecular phylogenies of rRNA and actin or polyubiquitin. [7]
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file
The height of the shell varies between 10 mm and 20 mm. The pointed, imperforate, solid shell has an elongated conic shape. It is polished, yellowish, pink, or olive-green, with reddish or olive longitudinal lines in pairs, sometimes separate on the body whorl, and usually with numerous narrow, rather obscure spiral pink or yellowish lines.
Being mostly or entirely without shells, most slugs have reduced mantles.) Pilsbry (1948) stated that "the enormously developed mantle , the large empty shell sac, and the insertions of the free retractor muscles along the margins of the foot cavity, instead of dorsally as in the Arionidae are special to the Philomycidae".
Lucinidae, common name hatchet shells, is a family of saltwater clams, marine bivalve molluscs. These bivalves are remarkable for their endosymbiosis with sulphide -oxidizing bacteria . [ 1 ]
The shell has a trochoidal shape. It is nacreous within. It is umbilicate or imperforate, having a deep slit or sinus in the outer superior margin of the peristome, which serves the purpose of an exhalant phase of respiration., and leaves on the corresponding part of the whorls a peculiarly sculptured band, the "anal fasciole" or the "slit fasciole."