Orthotheca

Orthotheca; Temporal range: Early Cambrian–Early Devonian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Clade:	Lophophorata
Clade:	Brachiozoa
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

Malinky, J. M. (2009). "First Occurrence of Orthotheca Novák, 1886 (Hyolitha, Early Devonian) in North America". Journal of Paleontology. 83: 588–596. doi:10.1666/08-164R.1.

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