Cephalaspis (meaning "head shield") is a probably monotypic genus of extinct osteostracan agnathan vertebrate. It was a trout-sized detritivorous fish that lived in estuaries of the late Silurian and the early Devonian.
In the distant future, Old Blood Mechanic Jack Tenrec and his crew of ecological freedom fighters confront the serious issues facing the futuristic environment that humanity has come to inhabit.
