Orthotheca

Orthotheca Temporal range: Early Cambrian–Early Devonian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Brachiopoda
Class:	†Hyolitha
Order:	†Orthothecida
Family:	†Orthothecidae Sysoev, 1958
Genus:	†Orthotheca Novák, 1886
Species
O. shriveri Malinky, 2009 Others, please add...

Orthotheca is a genus of sessile bottom-dwelling hyolith.^[1]

References

1. 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.