Gyrolithes Explained

Gyrolithes is a trace fossil consisting of a vertically spiraling burrow, known from Cambrian strata onward.^[1]

Notes and References

1. Jensen. Sören. Mens. Kaisa. 2001. Trace fossils Didymaulichnus cf. tirasensis and Monomorphichnus isp. from the Estonian Lower Cambrian, with a discussion on the Early Cambrian ichnocoenoses of Baltica. Proc. Estonian Acad. Sci. Geol.. 50. 2. 75–85. 10.3176/geol.2001.2.01 .