This fossil comes the most famous mass kill site in Australia, the Talbragar Fish Beds. Like the much younger Green River Formation deposits, large numbers of specimens that evidently died contemporaneously have been found. The ironstone has preserved all the details of the structure of the fish with remarkable fidelity. The fish is Leptolepis talbragarensis; the genus already shows all the characteristics of the true bony fishes, and may represent the early stages of the developmental route towards herrings of the Clupeiformes, the Order to which Knightia belongs. The reverse shows the partial remains of a further 3 examples.. The site from which this specimen came has been closed for some time now so that only material collected in the past is available.