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Ctenophora

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Cte`noph´o`ra    (t?-n?f´?-r?)
n. pl.1.(Zool.) A phylum of invertebrates, commonly ellipsoidal in shape, swimming by means of eight longitudinal rows of paddles. They are commonly called the comb jellies, because the separate paddles somewhat resemble combs. This phylum was formerly classified as a subdivision (class) within the Cœlenterata.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.Ctenophora - comb jelliesCtenophora - comb jellies; sea acorns; a small phylum formerly considered a class of Coelenterata
animal kingdom, Animalia, kingdom Animalia - taxonomic kingdom comprising all living or extinct animals
comb jelly, ctenophore - biradially symmetrical hermaphroditic solitary marine animals resembling jellyfishes having for locomotion eight rows of cilia arranged like teeth in a comb
class Nuda, Nuda - ctenophores lacking tentacles; comprises one genus: beroe
class Tentaculata, Tentaculata - ctenophores have retractile tentacles
phylum - (biology) the major taxonomic group of animals and plants; contains classes


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The most ancient animal groups (phyla) include the Porifera (sponges), Placozoa, Cnidaria, and Ctenophora (comb jellies).
Sponges were long considered the earliest common ancestor of all animals, but a genetics study last year suggested that Ctenophora, or comb jellyfish, reach even further back on the evolutionary ladder.
Instead, it belongs to the Ctenophora, a family of planktonic animals that depend on tiny cilia to paddle feebly about.
 
 
 
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