Teichichnus

   

 

A non-branching, unlined, vertical feeding trace characterized by concave-up laminations called spreite, which are tabular, curved laminations that are formed as the organism tunnels back and forth through the sediment in search of food. The organism on each back-and-forth pass moves just enough to avoid reworking a previously mined area.

 

Examples of Teichichnus Trace Fossils

Teichichnus in outcrop
Eocene Coldwater Fm
Sespe Canyon
California Transverse Ranges

Teichichnus in core
Pliocene Etchegoin Fm
Two 2536 well
Lost Hills oil field
San Joaquin Valley

Teichichnus in core
Pliocene Etchegoin Fm
Two 2536 well
Lost Hills oil field
San Joaquin Valley

Teichichnus in core
Miocene Temblor Fm
S34-404 ST well
Coalinga oil field
San Joaquin Valley