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anaspida
Science; General science
A group of fossil jawless fishes, roughly similar in appearance to extant lampreys, known from Early Silurian–Early Devonian deposits (about 410–430 million years ago) that ...
blastomycetes
Science; General science
A group of fungi consisting of yeasts that reproduce asexually by budding or splitting of single cells. In spite of simple morphology, these yeasts are quite diverse in terms of ...
mechanical separation techniques
Science; General science
A group of laboratory and production operations whereby the components of a polyphase mixture are separated by mechanical methods into two or more fractions of different ...
neandertals
Science; General science
A group of late archaic humans from Europe, the Near East, and central Asia that immediately preceded the first modern humans in those regions. The Neandertals are included by ...
coelacanths
Science; General science
A group of lobe-finned fishes, distantly related to tetrapods, that spans some 375 million years of geological time from the first known fossil in the Middle Devonian to the ...
radiolaria
Science; General science
A group of marine protists, regarded as a subclass of Actinopodea in older classifications, but not recognized as a natural group in some modern systems owing to its ...
caytoniales
Science; General science
A group of Mesozoic plants first recognized in 1925. The remains consist of palmately compound leaves with 3–6 lanceolate leaflets previously known as Sagenopteris phillipsi , ...
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