− | A quantitative community climate model (CCM<sub>1</sub>) at the National Center for Atmospheric Research was used by Amoco Production Research to investigate possible causes of Late Devonian extinctions. The results<ref name=ch17r69>Ormiston, A., R., Klapper, G., 1992, Paleoclimate, controls on Upper Devonian source rock sequences and stacked extinctions (abs.), in Lidgard, S., Crane, P., R., eds., Fifth North American Paleontological Convention Abstracts and Programs: Paleontological Society Special Publication 6, p. 227.</ref> suggest two things: | + | A quantitative community climate model (CCM<sub>1</sub>) at the National Center for Atmospheric Research was used by Amoco Production Research to investigate possible causes of [[Late Devonian]] extinctions. The results<ref name=ch17r69>Ormiston, A., R., Klapper, G., 1992, Paleoclimate, controls on Upper Devonian source rock sequences and stacked extinctions (abs.), in Lidgard, S., Crane, P., R., eds., Fifth North American Paleontological Convention Abstracts and Programs: Paleontological Society Special Publication 6, p. 227.</ref> suggest two things: |
− | * There was no perennial snow cover and, hence, no glaciation in the Austral regions. | + | * There was no perennial snow cover and, hence, no glaciation in the austral regions. |
| * Simulated sea-surface temperatures in the tropics ranged from [[temperature::27°C]] to [[temperature::34°C]]—high enough to kill reefs.<ref name=ch17r84>Thompson, J., Newton, C., 1989, Late Devonian mass extinction: episodic cooling or warming?, in McMillan, N., Embry, A., Glass, D., eds., Devonian of the World: Canadian Petroleum Society Memoir 14, vol. 3, p. 29–34.</ref> | | * Simulated sea-surface temperatures in the tropics ranged from [[temperature::27°C]] to [[temperature::34°C]]—high enough to kill reefs.<ref name=ch17r84>Thompson, J., Newton, C., 1989, Late Devonian mass extinction: episodic cooling or warming?, in McMillan, N., Embry, A., Glass, D., eds., Devonian of the World: Canadian Petroleum Society Memoir 14, vol. 3, p. 29–34.</ref> |