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adjective
Originally: of, relating to, or resembling the extinct genus Orbitolina of foraminiferans. Later: = orbitolinid .
noun
Originally: a foraminiferan of this genus. Later: = orbitolinid .
Origin
Mid 19th century; earliest use found in Philosophical Transactions of the Royal Society of London. From scientific Latin Orbitolina, genus name from orbitol- (in Orbitolites) + -ina.
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