This week I’ve gone for a slightly more artsy image for the mystery object than usual:
You can click on the pictures to get a large version, which you might find useful.
I foolishly forgot to measure the specimen or include a scale bar, so I’ll update with a length as soon as I get back to the specimen. Sometimes it’s nice to rely just on morphology, so let’s see if anyone can work out what this is before I provide more information. [UPDATE: it’s 84mm long]