Campylodiscus crebrecostatus Greville (1863: 11)

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 : 143

Campylodiscus crebrecostatus Greville (1863: 11) ( Fig. 104 )

References: Greville 1863, pl. 1, fig. 6; Crosby and Wood 1958, pl. 9, fig. 132; Desikachary 1988, pl. 482, fig. 2.

Features: Diameter 40–60 μm, transapical costae 8 in 10 μm.

Description: Valves suborbicular with round corners. Marginal costae occupy one third of the valve face. Median part rectangular with round corners and costae appear as extensions of the marginal ones. Axial rea narrow and shorter than the median area.

Ecology and Distribution: This species was originally reported from Australia and seem to be more distributed in the southern Hemisphere. Known from the Red Sea ( Desikachary 1988) and China ( Liu 2008). 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.