Description

Pikaia was a compressed, leaf-shaped animal.
It swam by throwing its body into a series of S-shaped, zigzag curves, similar to the movement of eels.
Fish inherited the same swimming movement, but they generally have stiffer backbones.
Pikaia had a pair of large head tentacles and a series of short appendages, which may be linked to gill slits, on either side of its head.

Middle Cambrian
Burgess Shale, Stephens Formation
Field, British Columbia, Canada
Excellent injection-molded CAST of two 1 inch animals on 2.4 inch slab
Problematica, Burgess Shale.

Casts are affordable visual aids to fossil collectors, museum curators, and science teachers.  They are life-size copies of actual fossils which complement any fossil display or reference collection.  This cast is especially nice even replicating the somewhat reflective quality of the actual fossil and the color of the actual matrix.