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hemiascomycetes
Science; General science
A class of the phylum Ascomycota that includes the yeasts and yeastlike fungi. These are morphologically simple fungi; no ascoma is formed, and the asci are produced free on the ...
phylactolaemata
Science; General science
A class of the phylum Bryozoa. Phylactolaemates have lophophores (crowns of tentacles surrounding the mouth) which are markedly U-shaped (or rarely nearly circular but still ...
scyphozoa
Science; General science
A class of the phylum Cnidaria traditionally containing four major groups—Coronatae, Rhizostomeae, Semaeostomeae, and Stauromedusae—all marine or estuarine. Most occur in two ...
hydrozoa
Science; General science
A class of the phylum cnidaria which includes the fresh-water hydras, the marine hydroids, many of the smaller jellyfish, a few special corals, and the Portuguese man-of-war. The ...
turbellaria
Science; General science
A class of the phylum Platyhelminthes commonly known as the flatworms. These animals are chiefly free-living and have simple life histories. The bodies are elongate and flat to ...
cestoda
Science; General science
A class of the phylum Platyhelminthes commonly referred to as tapeworms. All members are endoparasites, usually in the digestive tract of vertebrates. The class has been ...
calcarea
Science; General science
A class of the phylum Porifera, including exclusively marine sponges with a skeleton composed of spicules of calcium carbonate to which can be added a solid basal calcitic ...
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