Eucampia cornuta
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| Taxonomic Group: | Diatom |
| Trophic Status: | Autotrophic |
| Size Range: | 11.4-26.6 μm wide x 49.4-105 μm long (LUMCON Guide); 29-36 μm wide (Cupp 1943); 13-60 μm wide (Tomas 1997) |
| Key Characteristics: | Cells slightly curved in broad girdle view, with two blunt horns that are usually fairly long and narrow; numerous intercalary bands (ribs) that are sometimes difficult to see in water mounts; chloroplasts numerous and small |
| Confused With: | Eucampia zodiacus, which has shorter, thicker horns and thus apertures that are not as wide; also intercalary bands are not ribbed and are scarcely visible in E. zodiacus |
| Toxin: | None known |