Lehmanamia sheppeyensis is a poorly known amiiform-grade fish from the London Clay. It is based on limited cranial material, including a single important specimen, and its exact position among bowfin relatives remains uncertain. The available anatomy indicates a robust predatory fish, but the absence of a well-documented complete skeleton means that body shape and ecology cannot be reconstructed with confidence.

Living bowfin and many fossil amiiforms are opportunistic predators of fishes and invertebrates, so a carnivorous role is plausible, but this remains an inference from broader relationships. The species is best regarded as evidence for continued amiiform diversity in the early Eocene rather than as a fully understood ecological type.