This week I have something a little different for you to have a go at identifying:
I’d love to hear your thoughts on what this fossilised Friday mystery might be!
Friday mystery object #537
Zygoma
Adventures in natural history collections
This week I have something a little different for you to have a go at identifying:
I’d love to hear your thoughts on what this fossilised Friday mystery might be!
Zygoma 
Something spinose from Canada?
😉
Upon reflection, think it is likely the setigerous contemporary of the spiny canadian, named after the famous shale.
Hmm, interesting – I shall take a second look!
It doesn’t appear to have the fully spaced out parapodia of ‘classic’ looking Burgessochaeta, but the setae seem shorter and less overlapping than Canadia. I found a few pictures online of Burgessocheta for sale that look very much like this specimen ( see https://www.onlinefossilshop.com/shop/exceptional/burgess-shale-polychaete-burgessochaeta-setigera/ ). They are white and strongly contrasting with the black shale, so I assume they are being sourced from a slightly different locality than the classic Walcott Quarry (which isn’t available to collect commercially). I’m assuming this specimen comes from that same source, whatever it is.