[2] H. terrasanctus is known from a single fossil discovered at Ein Yabrud in the Judean hills, near Ramallah,[4] 20 km north of Jerusalem,[2] in the central West Bank.

[2][4] This site is a limestone carbonate which deposited in a low-energy marine platform environment.

EJ 695.,[2] measures 88 cm, missing only the tip of the tail, and is considered a small snake.

The contact between the prefrontal and frontal bones of the skull are very similar to ones found in the sister genus Pachyrhachis and the unrelated Dinilysia.

The ribs from the 45-48th and 105-108th vertebrae show signs of pachyostosis, bony thickening and growth.

The first is the secondary regaining of the limbs from legless ancestors, while the second is the possibility of multiple episodes of leg loss in snakes.

Unfortunately the current number of specimens from the family Pachyophiidae, and the complexity of snake evolutionary taxonomy are not enough to favor one option over the other.