FIGURE 3 - The evolutionary and genetic origins of consciousness in the Cambrian Period over 500 million years ago

| Development of the neural crest and placodes, near the midline of the back. In vertebrates, double-walled folds form at the anterior and lateral regions of the neural plate, the inner walls of which give rise to the neural crest while the lateral folds give rise to the neurogenic placodes.

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Reference

The evolutionary and genetic origins of consciousness in the Cambrian Period over 500 million years ago - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Development-of-the-neural-crest-and-placodes-near-the-midline-of-the-back-In_fig2_257600431 [accessed 12 May 2025]

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FIGURE 3 | Development of the neural crest and placodes, near the midline of the back. In vertebrates, double-walled folds form at the anterior and lateral regions of the neural plate, the inner walls of which give rise to the neural crest while the lateral folds give rise to the neurogenic placodes.

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<a href="https://www.researchgate.net/figure/Development-of-the-neural-crest-and-placodes-near-the-midline-of-the-back-In_fig2_257600431"><img src="https://www.researchgate.net/profile/Jon-Mallatt/publication/257600431/figure/fig2/AS:601791330791428@1520489642246/Development-of-the-neural-crest-and-placodes-near-the-midline-of-the-back-In.png" alt="| Development of the neural crest and placodes, near the midline of the back. In vertebrates, double-walled folds form at the anterior and lateral regions of the neural plate, the inner walls of which give rise to the neural crest while the lateral folds give rise to the neurogenic placodes."/></a>