Recent Gastrochaenolites borings on the Norfolk coast, eastern England, are commonly left in open nomenclature due to incomplete preservation. A second nominal ichnospecies of Gastrochaenolites, G. lapidicus Kelly and Bromley is identified from this area, infesting erratics of Upper Cretaceous Chalk. The other nominal Gastrochaenolites known from north Norfolk, G. ornatus Kelly and Bromley, has a less globular main chamber with a circular or spiral bioglyph at the base; it is commonly larger than G. lapidicus. The smooth, unlined, clavate borings of G. lapidicus were produced by the boring pholadid bivalve Barnea candida (Linnaeus).