J. Alroy, et al. 2008. Phanerozoic trends in the global diversity of marine invertebrates. Science 321:97-100.

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Oued Saquia Al Hamra, 6th reef cycle - SE Pay Khoy, calcimicrobial reefs - Pay Khoy, calcimicrobial reefs - Jim Woodruff Dam - Pointe de l'Armorique, beds S97-S99, bioherm - AMNH375, Pinnacle, Pine Springs Canyon, Guadalupe Mountains - Cedar Island - Bottrop