"This work for bass clarinet solo was written for Harry Sparnaay and dedicated to my friend Jose Luis Garcia del Busto. The title referring to fossils has a particular appeal to me not related to these persons. The bass clarinet is a relatively modern instrument that has an archaic sonority, from an ancient time, specially in its "more contemporary" registers. Trilobites have always been very interesting to me. As a young child, I certainly should have only been interested in dinosaurs, but I ha...