So many new species were being discovered, that it was impossible to arrange them all in a hierarchy based on the relative complexity of species.
The contemporary system of naming species was formalized by the Swedish botanist, zoologist, taxonomist, and physician Carl Linnaeus, also known as Carl von Linné after being knighted in 1761. As the "founder of modern taxonomy," he is well-known. His name is spelled Carolus Linnaeus in Latin for many of his writings and Carolus a Linné after his 1761 ennoblement.
By comparing living things, Linnaeus classified them. For instance, he would examine the molars of various species to determine their relationship. DNA is being utilized to categorize various life types. When it comes to classifying fossils, which lack DNA, scientists still rely on similarities between fossils and between fossils and contemporary lifeforms.
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