Amphisbaenians are peculiar reptiles with scales, vertebrae, and occasionally small forearms. They resemble worms and dwell underground, preying on various creatures. They’re much like aliens from a “B” a horror movie, or beasts from the movie "Tremors." Luckily for mankind, amphisbaenians are very tiny, making their unique 15 centimeter physiology—and mysterious subterranean life—difficult to study.

However, utilizing a micro-CT scanner, researchers at the University of Texas at Austin's Jackson School of Geosciences are hoping to unlock the secrets of the amphisbaenians—whose natural habitat spans much of the globe. The scientists conducted two studies, deemed the most comprehensive to date on southern African amphisbaenians, wherein they utilized CT images to create large 3D-printed models, facilitating the building of intricate cranial structures that are very difficult to study on the reptiles due to their diminutive size.

According to coverage from Phys.org, the CT images revealed skull sutures and a tiny central tooth that seems unique to amphisbaenians. As the models improve, scientists hope to know more about day-to-day lives of these adorable little monsters.

See images of these reptilian worms and read more details on the studies at the link below.