Holmer, L. E.; Popov, L.E. (2000). Order Acrotretida. pp. 321-440. In: Kaesler, R.L. (Ed.). Treatise on invertebrate paleontology. Part H. Brachiopoda (revised). Vol. 2, Geological Society of America & University of Kansas, 453 pp.
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Holmer, L. E.; Popov, L.E.
2000
Order Acrotretida. pp. 321-440. In: Kaesler, R.L. (Ed.)
Treatise on invertebrate paleontology. Part H. Brachiopoda (revised)
Vol. 2, Geological Society of America & University of Kansas, 453 pp.