... the Orcadian Basin of Scotland and the Kernave Member of the Narva Formation in Estonia. Recently, Newman et al. (2015) recognized Millerosteus cf. minor Miller (1858) in the Tarvastu Member of the Aruküla Formation in Estonia, a species common in the Orcadian Basin. The genus Watsonosteus Miles...

... cuspidatus . The uppermost member of the Aruküla Formation, the Tarvastu Member, contains the coccosteid Millerosteus cf. minor (see Mark-Kurik & Põldvere 2012 , fig. 3). This exactly mirrors the situation in Scotland where G. milleri is found between C. cuspidatus in the Achanarras Fish Bed...

... of Homostius also occurs in both members. Stratigraphically higher units also have a similar fauna, with Millerosteus minor Miller 1858 (described in Desmond 1974 ) occurring in the Givetian Mey Subgroup of Scotland, and Millerosteus cf. minor occurring in the Tarvastu Member of the Arukiila...