1. A small, primitive arthropod of the class Protura, typically found in soil and leaf litter, characterized by a cone-shaped head and lack of antennae.
Usage: zoology; technical

Examples

• Proturans are among the smallest arthropods, often less than 1.5 millimeters long.
• Scientists discovered a new species of proturan in the forest soil sample.
• Proturans play a role in soil ecosystems by feeding on fungi and organic matter.
• The proturan's lack of antennae distinguishes it from insects and other arthropods.
• Researchers use proturans as indicators of soil health in ecological studies.