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In June this year the Natural Sciences Department received a rather special donation from the Royal Botanic Gardens, Kew; a life size model of a giant millipede, Arthropleura, that would have lived in the Carboniferous Period, 300 million years ago. Arthropleura is the largest invertebrate (creepy-crawly) ever known to have lived on land, reaching up to 2.6 metres in length, but despite its monstrous proportions it is thought to have been a harmless herbivore.

The model was originally on display in Kew Garden’s Evolution House but when the space was dismantled in preparation for the HLF funded restoration of the Temperate House, it was no longer needed. So it was donated to Amgueddfa Cymru – National Museum Wales, thanks to the generosity of Chris Mills, David Cook and Jonathan Farley at Kew.

The Arthropleura model was in need of some substantial conservation work when it arrived at AC-NMC. It had been on open display for many years in a glass house alongside living plants and was damaged and rusty. The humid display environment had caused the surface paint to flake away and several spiders and snails had taken up residence on the underside of the model!

The first job was to give the model a good wash with hot soapy water and remove the dirt and cobwebs! Then all the flaking paint was scrubbed off, the damaged areas on the legs and head were rebuilt with an epoxy putty and the surface textures recreated. The nuts and bolts of the removable antennae had rusted together, so the metal parts were replaced with new stainless steel threaded rods.

Once the repairs were complete the model was carefully painted with acrylics and then coated in a durable varnish, making it once again suitable for public display.

Some of the Natural Science staff had become rather attached to the impressive 1.5m long millipede model whilst it underwent conservation work in the lab and named it Arthur the Arthropleura! We also decided to have a bit of Halloween fun with Arthur… so he “escaped” and went on the run around the museum galleries! We posted pictures of his adventures on the @CardiffCurator Natural Sciences Twitter account and had a fantastic response from our followers. Arthur the Arthropleura is now a social media star and is a really wonderful addition to our collections!         

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