This week’s Specimen of the Week is one of those animals that is easier to talk about in terms of what it isn’t rather than what it is. In a previous blog post I’ve written about the fun with naming and language that happens when common names meet scientific classifications and how we end up with eels which aren’t eels, crabs which aren’t crabs and the brilliantly named flying lemurs which don’t fly and aren’t lemurs.

When it comes to fossil organisms there’s often even more fun to be had as it’s very rare that fossil groups are given common names so we end up having to refer to them by what living animals they aren’t or nearly are. This week’s specimen of the week is one of those organisms, I’ll do my best to try to explain what it is below.

This week’s specimen of the week is…

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