Gyrolithes
Trace fossil
![](http://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Pliocene_gyrolithe.jpg/220px-Pliocene_gyrolithe.jpg)
Gyrolithes is a trace fossil consisting of a vertically spiraling burrow, known from Cambrian strata onward.[1]
References
- ^ 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" (PDF). Proc. Estonian Acad. Sci. Geol. 50 (2): 75–85. doi:10.3176/geol.2001.2.01.
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