| 
House & Kirchgasser | 
1993 | 
Devonian goniatite biostratigraphy and timing of facies movements in the Frasnian of eastern North America.	 
In: Hailwood,E.A. & Kidd,R.B. (eds.), High Resolution Stratigraphy; Geological Society Special Publications, 70: 267-292, fig.1-13;	 
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