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Niles Eldredge

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description Niles Eldredge Overview

Niles Eldredge is an American paleontologist whose research has focused particularly on fossil trilobites and evolutionary theory. With Stephen Jay Gould, he proposed punctuated equilibrium in 1972, describing a fossil-record pattern in which species often remain relatively stable for long intervals separated by comparatively rapid evolutionary change. His work is intended for scientific audiences studying paleontology, systematics, and macroevolution.

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What is punctuated equilibrium and who proposed it?

Punctuated equilibrium is a theory in evolutionary biology proposing that species often remain relatively stable for long periods, interrupted by rapid evolutionary changes. It was proposed in 1972 by Niles Eldredge and Stephen Jay Gould based on their study of the fossil record.

What fossils did Niles Eldredge study?

Niles Eldredge's research has focused particularly on fossil trilobites, an extinct group of marine arthropods. His work on trilobite fossils contributed to the development of punctuated equilibrium theory.

How did Eldredge and Gould's punctuated equilibrium differ from gradualism?

Eldredge and Gould's 1972 theory argued that the fossil record shows species often remain relatively stable for long periods rather than evolving gradually and continuously. This contrasted with the traditional model of slow, steady evolutionary change.

Where did Niles Eldredge work as a paleontologist?

Niles Eldredge is an American paleontologist known for his work on fossil trilobites and evolutionary theory. He has been associated with major natural history research institutions in the United States throughout his career.