Monomorphichnus Explained

Monomorphichnus is an arthropod trace fossil known from the base of the Cambrian period onwards, before the first trilobite fossils.^[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 . 2009-05-11. https://web.archive.org/web/20101227024043/http://kirj.ee/public/va_ge/g50-2-1.pdf. 2010-12-27. live.