''Lechriaspis'' is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

genus of poraspid heterostracan agnathan known from the Early Devonian of northern Utah, western United States.

Discovery

''Lechriaspis'' is known only from the holotype specimen. It was collected from the Grassy Flat Member of the Water Canyon Formation of northern Utah, which dates to the Emsian stage of the late Early Devonian. The specimen shows evidence of puncture wounds indicating predation by a eurypterid. ''Lechriaspis'' and '' Poraspis thomasi'' represent the first true members of the Cyathaspidida to be described from the Devonian of the western United States.

Etymology

''Lechriaspis'' was first named by David K. Elliott and Michael A. Petriello in

2011 File:2011 Events Collage.png, From top left, clockwise: a protester partaking in Occupy Wall Street heralds the beginning of the Occupy movement; protests against Libyan dictator Muammar Gaddafi, who was killed that October; a young man celebrate ...

and the type species is ''Lechriaspis patula''.

References

Fossils of the United States Extinct animals of Utah Devonian jawless fish Fossil taxa described in 2011 Heterostraci genera {{Devonian-jawless-fish-stub