Contrast this appearance with the previous example, which uses diffuse light. Trilobites Olenoides serratus . This is the largest of several species of trilobites found in the Burgess Shale, some of which have been preserved with soft appendages. The orange colour is produced by iron oxides. This specimen was wetted for the photograph.
Agnostid trilobites are also common in the quarry, but none appear to have appendages preserved.
Sponges Vauxia gracilenta has a branching morphology, and is very common. Tuzoia is particulary common in the Raymond quarry, where this photo was taken. Ottoia and Leanchoilia Ottoia , showing muscle bands and gut . Ottoia is a priapulid worm found commonly in the Burgess Shale. It was carnivorous, and probably lived in a burrow like modern priapulids.