Hercosestria

Hercosestria; Temporal range: Kungurian-Roadian PreꞒ Ꞓ O S D C P T J K Pg N
	Hercosestria cribrosa (multiple individuals)
Scientific classification
Kingdom:	Animalia
Phylum:	Brachiopoda
Class:	Strophomenata
Order:	Productida
Family:	Hercosiidae
Genus:	Hercosestria; Cooper & Grant, 1969
Species
	H. cribrosa Cooper and Grant, 1969 type; H. laevis Cooper and Grant, 1975; H. notialis Stehli and Grant, 1970;

Hercosestria is an extinct genus of brachiopods from the Lower and Middle Permian.^[1] They were important reef-forming organisms because of their conical shapes, attaching spines, and gregarious habits.^[2] It is related to Richthofenia.^[3] Species of the genus have been found in Texas (H. cribrosa and H. laevis) and Guatemala (H. notialis).

References

^ Paleobiology Database. "Hercosestria cribrosa". Retrieved 11 January 2012.
^ Weidlich, O. (2002). "Permian reefs re-examined: extrinsic control mechanisms of gradual and abrupt changes during 40 my of reef evolution". Geobios. 35 (Supplement 1): 287–294. doi:10.1016/s0016-6995(02)00066-9.
^ Cooper, G.A.; Grant, R.E. (1969). "New Permian brachiopods from west Texas" (PDF). Smithsonian Contributions to Paleobiology. 1: 1–20. doi:10.5479/si.00810266.1.1.

Hercosestria cribrosa Cooper & Grant 1969 (Roadian, Guadalupian, Middle Permian); Glass Mountains, Texas.
Hercosestria cribrosa Cooper & Grant 1969 (Roadian, Guadalupian, Middle Permian); Glass Mountains, Texas.

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[1] Paleobiology Database. "Hercosestria cribrosa". Retrieved 11 January 2012.

[2] Weidlich, O. (2002). "Permian reefs re-examined: extrinsic control mechanisms of gradual and abrupt changes during 40 my of reef evolution". Geobios. 35 (Supplement 1): 287–294. doi:10.1016/s0016-6995(02)00066-9.

[3] Cooper, G.A.; Grant, R.E. (1969). "New Permian brachiopods from west Texas" (PDF). Smithsonian Contributions to Paleobiology. 1: 1–20. doi:10.5479/si.00810266.1.1.

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