[1] Parastylonurus was a stylonuroid of small to medium size with a rounded prosoma wider than it was long.

The eyes were located on the anterior half of the carapace and the metasoma was very long.

The first three walking legs were very short with single opposable spines on every joint.

The last two walking legs were very long, reaching to the last tergite.

The opisthosoma was narrow and undifferentiated and the telson was spike-like.