Sidneyia inexpectans and Ottoia prolifica
Middle Cambrian
Burgess Shale
British Columbia, Canada

Enormous 330mm (13 inches) x 165mm (6.5 inches) slab with 112mm (4.4 inches) Sidneyia and 170mm (6.7 inches) Ottoia. Easily the biggest, most spectacular Burgess Shale piece we have ever had and the best of its kind available for sale anywhere in the world. Yes, it has documents. You will probably never see anything like this for sale ever again.