Hippochrenes amplus seems to be confined to southern England, with possible records from Italy and Romania. It is found in muds and muddy sands that were deposited in shallow water. These strata belong to the Selsey, Barton Clay and Becton Sand formations of West Sussex and Hampshire and are of mid Lutetian to Bartonian age (about 36-43 million years old).
Adult specimens are always rare, though juvenile specimens up to a few cm in size are common in the strata of the Barton Clay Formation. This parallels the population structure of a recent relative belonging to the same family – Tibia delicatula. High juvenile mortality means that relatively few individuals survived to adulthood but those that did probably spent much of their lifespan as adults.
Little is known about the habits and diet of living species of the Rostellariidae. However, all well-known members of the superfamily Stromboidea are either herbivores or detritivores (detritus eaters), so we may infer that Hippochrenes was similar.