Breviphyllum Stumm, 1949

Genus Breviphyllum Stumm, 1949

Type species: Amplexus lonensis Stumm, 1937 , from the Emsian , Low- er Devonian, of Nevada, USA .

Remarks.— Stumm (1949) introduced the generic name Breviphyllum for siphonophrentid corals with dissepiments. As pointed out by Merriam (1974), the type-specimen of the type species displays no dissepiments, therefore, Breviphyllum should be considered as a junior synonym of Breviphrentis Stumm, 1949 ( Oliver 1992; Pedder 2002). However, the specimens figured by Stumm (1937: pl. 54: 3, 5), determined as Amplexus nevadensis and Amplexus magnus , display scarce dissepiments. The latter two are probably not congeneric with the type species Breviphyllum lonensis . Pedder (2002) demonstrated that true dissepiments are present in the type material, therefore the name Breviphyllum is correct. Pedder (2002) introduced two new genera Weyerdites Pedder, 2002, and Bartineophyllum Pedder, 2002, for breviphyllids with dissepiments (lonsdaleoid and interseptal, respectively) and long septa, that clearly differ from Breviphyllum by their more complex skeleton.