Alexei Nikolaevich Severtsov (Russian: Алексей Николаевич Северцов; 11 September 1866 – 16 December 1936) was a Russian and Soviet evolutionary zoologist who worked on comparative anatomy and morphology. He was the son of the zoologist Nikolai Severtzov. He studied the evolution of vertebrates and established an institute for evolutionary morphology which is now named after him as the AN Severtsov Institute of Ecology and Evolution. He introduced various concepts of phyloembryology and evolutionary physiology.
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