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rhizopodea
Science; General science
A class of Sarcodina including both parasitic and free-living species found in fresh and salt water and the soil. No species forms true axopodia; instead, pseudopodia may be ...
actinopodea
Science; General science
A class of Sarcodina; or in some modern schemes a superclass (Actinopoda) within the phylum Sarcomastigophora. Some of these protozoans have more or less permanent pseudopodia, ...
monosaccharide
Science; General science
A class of simple sugars containing a chain of 3–10 carbon atoms in the molecule, known as polyhydroxy aldehydes (aldoses) or ketones (ketoses). They are very soluble in water, ...
sclerosponge
Science; General science
A class of sponges that lay down a compound skeleton comprising an external, basal mass of calcium carbonate, either aragonite or calcite, and internal siliceous spicules and ...
hexactinellida
Science; General science
A class of sponges whose skeletons are made of siliceous hexactine spicules. These exclusively marine sponges are widely distributed in modern oceans. Their fossil record extends ...
actinopterygii
Science; General science
A class of teleostom fishes commonly known as the ray-finned fishes comprising the subclasses Cladistia (Polypteriformes and fossil orders), Chondrostei (Acipenseriformes and ...
zygomycetes
Science; General science
A class of terrestrial fungi in the phylum Zygomycota, reproducing sexually with a zygospore and asexually by sporangiospore or conidium. The Zygomycetes are one of two classes ...
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