Plural of coelate; animals or organisms possessing a true body cavity or coelom.
From Latin coela (plural of coelom, from Greek koilos 'hollow') with the plural marker -a, used in zoological taxonomy.
Coelata versus Acoelata (animals without true cavities) was one of biology's most important early distinctions—it split the animal kingdom into those with internal space for organs and those without, explaining complexity levels.
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