Euscalpellum minutum was a very small stalked barnacle. As an adult it would have remained fixed to a hard object and fed by rhythmically extending feathery limbs into the surrounding water to catch suspended microscopic food.

Its tiny plates are easy to overlook, but the animal represents an important part of the London Clay ecosystem: the miniature filter feeders living on shells, wood and other hard surfaces. These attached communities would have provided food and habitat for still smaller organisms.