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

Meet Mosura fentoni, a bizarre 506-million-year-old "sea-moth" with three eyes, claws, and an abdomen full of gills.

Paleontologists at the Manitoba Museum and Royal Ontario Museum (ROM) have discovered a remarkable new 506-million-year-old predator from the Burgess Shale of Canada. The results are announced in a ...

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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A new species of radiodont has been discovered: Mosura, a “sea moth” that lived over 500 million yeas ago. Over 500 million ...

Several fossils of Mosura additionally show details of internal anatomy, including elements of the nervous system, circulatory system, and digestive tract. “Very few fossil sites in the world ...

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.