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nemertea
Science; General science
A phylum of bilaterally symmetrical, unsegmented, ribbonlike worms, frequently referred to as the Nemertinea. They have an eversible proboscis and a complete digestive tract with ...
echinodermata
Science; General science
A phylum of exclusively marine animals with a peculiar body architecture dominated by a five-part radial symmetry. Echinodermata (from the Latin echinus (spine) + dermis ...
ctenophora
Science; General science
A phylum of exclusively marine organisms, formerly included in the jellyfish and polyps as coelenterates. These animals, the so-called comb jellies, possess a biradial symmetry of ...
zygomycota
Science; General science
A phylum of filamentous, microscopic fungi that undergo sexual reproduction by the formation of a zygospore. The Zygomycota are often referred by the common names “pin molds” or ...
kinorhyncha
Science; General science
A phylum of free-living marine invertebrates less than 1 mm long. They are segmented and lack internal ciliation (see illustration ). Kinorhyncha, formerly called Echinoderida, ...
gnathostomulida
Science; General science
A phylum of microscopic marine worms related to Rotifera and Micrognathozoa, mainly characterized by complex cuticular structures in the pharynx and a monociliated skin ...
rotifera
Science; General science
A phylum of microscopic, mainly free-living aquatic animals, characterized primarily by an anterior ciliary apparatus, the corona. When the cilia of the corona are in motion the ...
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