Plate 4

Scanning electron microscope pictures of radiolarians from the Bermeja Complex, western Puerto Rico. Marker = 100 μm. Sample PR-SB11 (Berriasian). Fig. 1 Archaeodictyomitra cf. vulgaris Pessagno. Fig. 2 Archaeodictyomitra sp. Fig. 3 Archaeodictyomitra cf. tumandae Dumitrica. Fig. 4 Archaeodictyomitra immenhauseri Dumitrica. Figs. 5, 6 Mictyoditra sp. Fig. 7 Stichomitra (?) sp. Fig. 8 Thanarla cf. conica (Aliev). Fig. 9 Pseudodictyomitra aff. leptoconica (Foreman). Fig. 10 Pseudodictyomitra sp. Fig. 11 Svinitzium (?) mizutanii Dumitrica. Fig. 12 Cryptamphorella sp. Fig. 13 Archaeospongoprunum sp. Fig. 14 Acanthocircus sp. Fig. 15 Pantanellium squinaboli (Tan) Fig. 16 Pantanellium sp. Sample PR-SB12 (Berriasian). Fig. 17 Archaeodictyomitra cf. pseudomulticostata (Tan). Figs. 18, 19 Archaeodictyomitra mitra gr. Dumitrica. Fig. 20 Archaeodictyomitra immenhauseri Dumitrica. Figs. 21, 22, 24 C ryptamphorella sp. Fig. 23 Obesacapsula (?) cf. cetia (Foreman). Fig. 25 Hiscocapsa (?) sp. Sample PR-SB14 (latest Bajocian–early Oxfordian). Fig. 26 Archaeodictyomitra sp. Fig. 27 Archaeodictyomitra prisca Kozur & Mostler. Fig. 28 Transhsuum sp. Fig. 29 gen. et sp. indet. Figs. 30, 31 Eucyrtidiellum unumaense s.l. (Yao). Fig. 32 Eucyrtidiellum unumaense pustulatum Baumgartner. Fig. 33 Spinosicapsa (?) sp. Fig. 34 Striatojaponocapsa (?) sp. Figs. 35, 36 Homeoparonaella sp. Fig. 37 Alievium cf. longispineum Yang & Wang