Hercosestria

Hercosestria; Temporal range:
	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.