Campylodiscus imperialis Greville (1860: 30)

Al-Handal, Adil Y., Thomas, Evan W. & Pennesi, Chiara, 2018, Marine benthic diatoms in the newly discovered coral reefs, off Basra coast, Southern Iraq, Phytotaxa 372 (2), pp. 111-152 : 144

Campylodiscus imperialis Greville (1860: 30) ( Fig. 107 )

References: Schmidt et al. 1875, pl. 53, figs 5, 7; Desikachary 1988, pl. 482, figs 1–3.

Features: Diameter 50–70 μm, costae 4–5 in 10 μm, internal transapical striae 10–11 in 10 μm.

Description: Valves orbicular and strongly bent. Marginal costae extends to one third of valve face. Median part orbicular with fine radiating striae. Axial area very narrow.

Remarks: The internal punctate transapical striae may appear in lines or separate puncta when changing focus.

Ecology and Distribution: Widely distributed marine species. Not reported previously from the Gulf. Rare in Basra corals.

Figures

FIGURES 103–110. Marine benthic diatoms in coral reefs off Basra. Fig. 103. Campylodiscus bicostatus, Fig. 104. Campylodiscus crebrecostatus, Fig. 105. Campylodiscus daemelianus, Fig. 106. Campylodiscus decorus, Fig. 107. Campylodicus imperialis, Fig. 108. Petrodictyon gemma, Fig. 109. Surirella fastuosa, Fig. 110. Campylodiscus neofastuosus.