Researchers formally describe Helmetia expansa, offering new insights into its anatomy, behavior and evolutionary relationships.

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For over a century, the Cambrian arthropod Helmetia expansa remained a mystery. Discovered by paleontologist Charles ...

Instead, insects are a subgroup within Arthropoda, a class called " Insecta," that is characterized ... For context, that's about 100 million years before any of our vertebrate ancestors - animals ...

Insects belong to a phylum called Arthropoda – animals with hard exoskeletons and jointed feet. Advertisement All insects are arthropods, but not all arthropods are insects. For instance ...

Instead, insects are a subgroup within Arthropoda, a class called “Insecta ... years before any of our vertebrate ancestors – animals with a backbone – ever walked on land.