Era Of Giant Insects. The studies of fossil records indicate that current insects evolved from giant ancestors. Some scientists argue that the era of giant insects ended as the levels of atmospheric molecular oxygen declined. The Paleozoic era occurred 542 to 250 million years ago. They were flying looking similar to dragonflies and some of them were as big as an eagle.
Today insects are among the smallest creatures on Earth but about 300 million years ago huge bugs were fairly common. These were known as the Carboniferous period 360 to 300 million years ago and the Permian period 300 to. Fossils found in China show that it was a massive undersea arthropod that lived about 500 million years ago. Over time and the evolution of life these insects have gradually become the size they are now. Others stated that as birds conquered the skies they outcompeted larger insect species. They were flying looking similar to dragonflies and some of them were as big as an eagle.
Anomalocaris canadensis looked like a strange blend of squid and shrimp.
Watch the video titled The Age of Giant Insects to learn more about insect evolution. The Protodonata is an example of an order of extinct giant insects. The dragonfly-like griffinfly for. Anomalocaris canadensis looked like a strange blend of squid and shrimp. But then they were reborn again only their size was much smaller than before. The Paleozoic era occurred 542 to 250 million years ago.