Millerosteus minor (Miller)
If this species was found at the same horizon as Coccosteus cuspidatus and not higher up in the Mey Subgroup it would probably have been described as a juvenile C. cuspidatus. However, the fish does not grow any larger than 15-20 cm, while Coccosteus cuspidatus can reach lengths of 40-50 cm. All sizes of M. minor are known from the very small of up to 20 cm in total length. Also, this fish has tiny tooth like structures on its lower jaw. Perhaps it preyed on the acanthodian Mesacanthus or small invertebrates.