Description

U-shaped burrows are characterized by two surface openings that are connected by a single tunnel with an orientation that varies along its length (90-0 degrees). The shape of the “U” formed by the tunnel is highly variable and may be symmetrical to asymmetrical. The tunnel may have an elliptical to circular cross section and can be straight to sinuous. U-shaped burrows are frequently formed from the modification of J-shaped burrows, as the end of the “J” shape is excavated back toward the surface. U-shaped burrows are used as temporary shelters to permanent dwellings and are also produced as a result of locomotion through the sediment.

 

Organisms that produce U-shaped burrows

 

Giant Vinegaroon	Arizona Desert Scorpion	Gold Skink	Eastern Tiger Salamander	Giant African Millipede	Sonoran Desert Millipede