Protura

Proturans, commonly nicknamed "coneheads", are an order within the animal kingdom that reside in soil environments. These organisms are very small; either microscopic or barely visible to the naked eye.

References

[1] Tipping, C. 2004. Proturans (Protura). Encyclopedia of Entomology:1842–1843.

[2] Tihelka, E., C. Cai, M. Giacomelli, J. Lozano-Fernandez, O. Rota-Stabelli, D. Huang, M. S. Engel, P. C. J. Donoghue, and D. Pisani. 2021. The evolution of Insect Biodiversity. Current Biology 31.

[3] Galli, L., J. Shrubovych, Y. Bu, and M. Zinni. 2018. Genera of the Protura of the world: Diagnosis, distribution, and key. ZooKeys 772:1–45.