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Helmetia is obviously well-armored and large, so it probably didn't have too many predators. Large anomalocarids were the only animals big enough to even try to eat Helmetia. Helmetia had hard spines on the edges of its armor and its flat shape also would have made it hard for an anomalocarid to grip it. All its armor probably would have made Helmetia a slow swimmer, but this probably did not make it vulnerable.
Helmetia was presumably a filter feeder, feeding on plankton, bacteria, and other microscopic living things that floated around in the water column.
Fossils of Helmetia are extremely rare. They have been found in the Burgess Shale and were discovered by Charles Doolittle Walcott.
|© Life Before the Dinosaurs 2012|