MOLLUSCA
\mˈɒlʌskə], \mˈɒlʌskə], \m_ˈɒ_l_ʌ_s_k_ə]\
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gastropods; bivalves; cephalopods; chitons
By DataStellar Co., Ltd
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One of the grand divisions of the animal kingdom, including the classes Cephalopoda, Gastropoda, PteropodaScaphopoda, and Lamellibranchiata, or Conchifera. These animals have an unsegmented bilateral body, with most of the organs and parts paired, but not repeated longitudinally. Most of them develop a mantle, which incloses either a branchial or a pulmonary cavity. They are generally more or less covered and protected by a calcareous shell, which may be univalve, bivalve, or multivalve.
By Oddity Software
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A phylum of the kingdom Metazoa. Mollusca have soft, unsegmented bodies with an anterior head, a dorsal visceral mass, and a ventral foot. Most are encased in a protective calcareous shell. It includes the classes Gastropoda, Bivalvia, Cephalopoda, Aplacophora, Scaphopoda, Polyplacophora, and Monoplacophora.
By DataStellar Co., Ltd
Word of the day
Elizabeth Sara Sheppard
- An English novelist; born at Blackheath, 1830; died Brixton, March 13, 1862. She wrote noted "Charles Auchester"(1853), mystical art novel; "Counterparts, or the Cross of Love"(1854); "My First Season"(1855); "The Double Coronet"(1856); "Rumor", a musical and artistic novel(1858).