Orthotheca
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Orthotheca Temporal range: Early Cambrian–Early Devonian |
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| Scientific classification | |
| Kingdom: | Animalia |
| Informal group: | Lophophorata |
| Class: | †Hyolitha |
| Order: | †Orthothecida |
| Family: |
†Orthothecidae Sysoev, 1958 |
| Genus: |
†Orthotheca Novák, 1886 |
| Species | |
Others, please add... |
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Others, please add...
Orthotheca is a genus of sessile bottom-dwelling hyolith.
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