| WebNameShort | |
| Triceratium udiensis Hustedt in Schmidt et al. 1959 |
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| Triceratium venulosum f. quadrata Hustedt in Schmidt et al. 1959 |
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| Triceratium verecundum Hustedt in Schmidt et al. 1959 |
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| Triceratium veterarium Hustedt in Schmidt et al. 1959 |
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| Triceratium vetustum Hustedt in Schmidt et al. 1959 |
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| Trigonium capitiferum Hustedt in Schmidt et al. 1959 |
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| Trigonium demissum Hustedt in Schmidt et al. 1959 |
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| Trigonium gracillimum Hustedt in Schmidt et al. 1959 |
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| Trigonium haitianum Hustedt in Schmidt et al. 1959 |
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| Trigonium lineatum Hustedt in Schmidt et al. 1959 |
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| Trigonium lineatum var. taeniatum Hustedt in Schmidt et al. 1959 |
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| Trigonium luculentum Hustedt in Schmidt et al. 1959 |
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| Trigonium obtusangulum Hustedt in Schmidt et al. 1959 |
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| Trigonium officiosum Hustedt in Schmidt et al. 1959 |
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| Trigonium pilchrum Hustedt in Schmidt et al. 1959 |
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| Trigonium pseudonervatum var. luculentum Hustedt in Schmidt et al. 1959 |
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| Trigonium sparsipunctatum Hustedt in Schmidt et al. 1959 |
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| Trigonium subofficiosum Hustedt in Schmidt et al. 1959 |
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| Trigonium taeniatum Hustedt in Schmidt et al. 1959 |
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| Trigonium udiensis Hustedt in Schmidt et al. 1959 |
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