Last weekend I had a fantastic visit to Paris and my wonderful wife gave me the best Valentines Day gift in the world, by taking me to the spectacular Galerie d’anatomie comparée et de Paléontologie.

As you might have guessed, I was in bone heaven and had to be dragged out by security at closing time – but not before taking hundreds of photos of the incredible collections.

So this week’s mystery object comes courtesy of Georges Pouchet, the comparative anatomist who established the Gallery:

Any idea what this might be?

As usual you can put your suggestions, thoughts and questions in the comments box below. I hope you enjoy the challenge!