Middle Cambrian

Burgess Shale, Stephens Formation

Field, British Columbia, Canada

Five specimens, 10mm, 10mm, 14mm, 14mm, 14mm on 61mm x 52mm slab

Problematica, Burgess Shale.

Pollingeria is a genus of animal unassigned to a family, class, nor phyllum.  It’s been called a “short worm” as a nickname – perhaps related to annelids.  It seems to occur in small clusters.

Paleontologists have created a catch-all category called “problematica” for creatures represented by remains insufficient for assignment to a particular taxon – little more than phantoms from the very edge of scientific understanding.