Figs. 5 a-f Entogonia briggeri n in Entogonia Briggeri N. Sp., A New Diatom Species From The Middle Miocene Of Romania And New Insights On The Fossil Marine Diatom Genus Entogonia Greville

Figs. 5 a-f Entogonia briggeri n. sp. sample 1315; SEM internal views; a-b Internal view illustrating the outer and inner triangles, internal costae, and internal coil system; c-d Details of poles of the specimen figured in b showing the ramifying of some costae to form a dense network, hyaline center of the inner triangle, inner coil with costae joined to one another by curved bars; e Detail of a pole showing the apices of the coil fusing to a siliceous punctate membrane within the exit pore on the side of the orifice touching the elevation; f Detail of a pole of the specimen figured in a showing the internal view of the elevation with delicate puncta. Scale bars: 20 µm.