Phát hiện mới về não bộ
Một hóa thạch 520 triệu năm tuổi cho thấy các bộ não phức tạp đã phát triển sớm hơn nhiều so với suy đoán trước đây của giới khoa học, với ít thay đổi về phương diện giải phẫu học từ đó đến nay.
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