Pterocystis spec.

 

 

Pterocystis spec.

 

I found this heliozoon in a sample from Crailoo and made a dried preparation. In phase contrast the typical Pterocystis spines became visible. It could be P. pulchra.

 

Pterocystis spec.
The arrows point to the radial elements.

 

Pterocystis spec.

 

Pterocystis spec.