Protomegastrophia Caster, 1939

Musteikis, Petras & Cocks, L. Robin M., 2004, Strophomenide and orthotetide Silurian brachiopods from the Baltic region, with particular reference to Lithuanian boreholes, Acta Palaeontologica Polonica 49 (3), pp. 455-482 : 465

Protomegastrophia Caster, 1939

Remarks.—The type species, P. profunda (Hall) comes from the Wenlock of Wisconsin, U.S.A. Bassett and Cocks (1974: 17) have recognised Protomegastrophia semiglobosa ( Davidson, 1871) , whose type locality is the Upper Wenlock of Walsall, England, from the Lower Wenlock Upper Visby and Högklint Beds of Gotland. We have identified Protomegastrophia sp. from the Riga and Gėluva formations (Sheinwoodian and Homerian) in central Lithuania, and from the Mituva Formation (Ludfordian) in west Lithuania (Appendix).

Eopholidostrophiidae Rong and Cocks, 1994 Eopholidostrophia Harper, Johnson, and Boucot, 1967

Remarks.—The type species is E. sefinensis Williams, 1951 , from the Aeronian of the type Llandovery district, Wales. Eopholidostrophia spp. , have been recorded from the Lower Llandovery of the Oslo region by Baarli (1995: 47). As discussed above under Jonesea , the species Plectambonites aequalis Teichert, 1928 , from the Lower Llandovery Tamsalu Formation of Estonia, may be attributable to Eopholidostrophia , but the genus is not otherwise known from the East Baltic. Teichert’s type specimens have not been traced, because they were lost in World War II.