Trilobite Leonaspis and a lichid

["Benedikt F. Magrean, AG5/AG1" <MAGREAN@xxxxxxxxxxxxxxxxxxx>]

I am working on the trilobites of the Ardennes/Eifel-region in 
Germany/Belgium. In october, I found two leonaspis ( odontopleurid ) species in the
Wiltz-schichten of the lower devonian and a cephalon of a lichid, two 
trilobites, that have not been found in these "Schichten" before
Does anybody know about special literature on odontopleurid/lichid 
trilobites or anybody, who is working on these species.
Thanks in advance
Ben
Benedikt Magrean 
" There are no bytes like trilobites "
Magrean@IBAC.RWTH-AACHEN.DE