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Scleractinia -

Figure 11.36 Stratigraphic ranges of the main coral groups. Geological period abbreviations are standard, running from Ediacarian (E) to Triassic (Tr). (Replotted from Clarkson 1998.)

Figure 11.37 Coral biostratigraphy for the Dinantian. (Redrawn from various sources.)

Dinantian

Stages

Brigantian

Asbian

Holkerian

Arundian

Chadian

Courceyan

Vaughan 1905-1906 (Avon Gorge)

Horizon e

Dibunophyllum Zone

Seminula Zone

Zaphrentis Zone

Cleistopora Zone

Syringothyris (Lower Caninia) Zone

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