It turns out that preservation of these structures is widespread, confirming the ancient origin of this type of circulatory ...

Paleontologists have discovered that a three-eyed sea moth predator lived on Earth half a billion years ago with evidence found in one of the most fossil-rich areas of the world.

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"Very few fossil sites in the world offer this level of insight into soft internal anatomy," Caron ... An anatomical diagram of Mosura, showing the nervous system in purple, the digestive system in ...

Anatomical diagram of Mosura fentoni ... Joe Moysiuk Several fossils of Mosura additionally show details of internal anatomy, including elements of the nervous system, circulatory system, and ...

Paleontologists at the Manitoba Museum and Royal Ontario Museum (ROM) have discovered a remarkable new 506-million-year-old ...

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Circulatory system: Blood vessels Laid end-to-end, an adult's arteries, veins and capillaries would stretch for about 100,000 miles - enough to wrap around the world nearly four times.