Lumbricaria intestinum

This type (ichnospecies) of coprolite is currently defined as "loosely confined, intertwined to elongate Lumbricaria."

Source: The ichnogenus Lumbricaria Münster from the Upper Jurassic of Germany interpreted as faecal strings of ammonites by Dirk Knaust and René Hoffmann (2020).

Lumbricaria with Crinoid Inclusions

If you look at many specimens on this website, you may notice I often mention that coprolite fragments can be some of the most interesting specimens. In this case, we have a small piece of what was likely a long, tangled string of coprolite. It probably wasn't fully prepped because it was a small fragment. Because matrix (the rock or sediment surrounding a fossil) is still present in surface crevices, the undigested crinoid bits are more clearly visible.

Lumbricaria and Brittle Star

A faint star shape was present to the left of the tangled, stringy coprolite. After a little prep work, the underside of a juvenile brittle star (Sinosura ophiuroid) was revealed. Unfortunately the coprolite was treated with a consolidant, so it is impossible to tell if there are any inclusions. Remember: NEVER USE GLUE ON FOSSIL POO!

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