An elongated burrow preserved as a relief on coarse-grained sediments. A scale bar shows that the observable part is around 20 cm long and 1-1.5 cm wide. It appears that the burrow branches on the right of the image.
#FossilFriday: an ichnofossil - probably a crustacean burrow - from the Pliocene (the site is dated at 3.7-3.5 Ma) of the Cervo River "Canyon", Biella Province, Piedmont.
#ichnology #ichnofossil #tracefossil #invertebrate