Rethinking the Cambrian Explosion: Evidence of Early Brain Development Before Shells and Limbs
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Rethinking the Cambrian Explosion: Evidence of Early Brain Development Before Shells and Limbs
A groundbreaking hypothesis suggests that the Cambrian Explosion, which marked a rapid surge in animal diversity around 500 million years ago, was primarily influenced by the early evolution of complex nervous systems rather than the development of shells and limbs. Brain First: A schematic representation of the main points of the hypothesis. Image credit: Ariel [...] The post Rethinking the Cambrian Explosion: Evidence of Early Brain Developmen…
For over a century, the Cambrian explosion has been described as a Big Bang of life: 538 million years ago, the oceans suddenly filled with shells, eyes, articulated legs, and complex digestive systems. Anatomical diversity exploded in just a few million years. A new hypothesis, published in BioEssays by Ariel D. Chipman of the Hebrew University of Jerusalem, reverses the causal sequence: the brain arrived first, and its genetic tools were then …
A study proposes that the Cambrian explosion, which occurred approximately 500 million years ago, was not driven by the evolution of structures such as shells or limbs, but by the complexity of nervous systems, especially the brain. The research, led by Professor Ariel Chipman of the Hebrew University of Jerusalem, suggests that ecological changes during this period were fundamental to the development of more sophisticated organisms. The Brain-F…
Rethinking the Cambrian Explosion: Before Shells and Limbs, There Was the Brain
A new hypothesis proposes that the Cambrian Explosion -- the sudden burst of animal diversity 500 million years ago -- was not driven by shells or limbs, but by the early evolution of complex nervous systems. The post Rethinking the Cambrian Explosion: Before Shells and Limbs, There Was the Brain appeared first on Sci.News: Breaking Science News.
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