Olenus & Ctenocephalus Trilobites from Sweden

From my exchanges with my friend Christian in France, here are some Trilobite fossils that he collected in Sweden.

First up are a couple of black shale pieces that have partial cephalon pieces from two species of Trilobites: Ctenocephalus exsulans and Bailiella impressa - Cambrian - Brantevik, Sweden

Here are some links to pages with more info on Bailiella impressa
http://trilobites.naturalforum.net/t1387-bailiella-impressa

This page is from Christian's Flickr account and you can see a piece with intact cephalons from both Ctenocephalus exsulans and Bailiella impressa
http://www.flickr.com/photos/supergrevling/5513007208/in/set-72157608639773962


Next up are some Olenus truncatus (BRUNNICH, 1789) fossils from the Late Cambrian Alum Shale formation near Scania, Andrarum, Sweden.

Specimen #1

Specimen #2

Specimen #3

Thanks to Christian for these fossils. They help expand the Cambrian portion of my collection!

As I was researching these trilobites I came across Per Hansson's website and suggest a visit if you have even a passing interest in Trilobites. He has an impressive page of Trilobites that he has collected from various locations in Sweden.

I also came across an interesting paper here that discusses the environmental record saved within the Alum Shale formation.