| Orthotheca Temporal range:  | |
|---|---|
| Scientific classification  | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Superphylum: | Lophotrochozoa | 
| Class: | †Hyolitha | 
| Order: | †Orthothecida | 
| Family: | †Orthothecidae Sysoev, 1958 | 
| Genus: | †Orthotheca Novák, 1886 | 
| Species | |
| 
 Others, please add... | |
Orthotheca is a genus of sessile bottom-dwelling hyolith.[1]
References
- 1 2 Malinky, J. M. (2009). "First Occurrence of Orthotheca Novák, 1886 (Hyolitha, Early Devonian) in North America". Journal of Paleontology. 83 (4): 588–596. Bibcode:2009JPal...83..588M. doi:10.1666/08-164R.1. S2CID 130227630.
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