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A rethink of how brains originated in science textbooks may be required in light of the fossils of a tiny sea creature that perished more than half a billion years ago.
According to a new study, fossils of a tiny sea creature with a delicately preserved nervous system solve a century-old debate over how the brain evolved in arthropods, the most species-rich group in the animal kingdom
Fossils of a tiny sea creature that died more than half a billion years ago may compel a science textbook rewrite of how brains evolved.
The finding that the head and brain of <i>Cardiodictyon catenulum</i>, a wormlike animal, show no segmentation may solve a long and heated debate about the origin and composition of the head in arthropods.
According to a new study, fossils of a tiny sea creature with a delicately preserved nervous system solve a century-old debate over how the brain evolved in arthropods, the most species-rich group in the animal kingdom. Combining detailed anatomical studies of the fossilized nervous system with analyses of gene expression patterns in living descendants, they conclude that a