Eostrix vincenti is a small early Eocene owl named from London Clay foot material. Its owl identity is plausible, but the traditional referral to the North American genus Eostrix and to a particular extinct owl family is not secure under modern comparison. It is therefore best retained as a named but taxonomically uncertain strigiform.

The preserved foot bones suggest a predatory bird capable of grasping prey, as expected for an owl. Small vertebrates and large invertebrates are plausible prey, but nocturnality cannot be inferred from these bones alone; early stem owls were not necessarily ecologically identical to living nocturnal species.