Cheirolepis trailli Agassiz
This medium size fish can reach a length of 30 cm and is well known from the Sandwick Fish Bed but, since it is often not well preserved people don’t bother to collect it. However, it is a very important fish in the fish “history” (see general text on actinopterygians).
It is also found above the Sandwick Fish Bed as isolated scales and dermal plates of the head. It was a top predator like Gyroptychius agassizi and probably acanthodians, lungfish and small osteolepids were its prey. Both lower and upper jaws have rows of small but sharp teeth.