Authors Year Title
House & Blodgett 1982 The Devonian goniatite genera Pinacites and Foordites from Alaska.
Canadian Journal of Earth Sciences, 19: 1873-1876, pl.1.
Klug 2002 Quantitative stratigraphy and taxonomy of late Emsian and Eifelian ammonoids of the eastern Anti-Atlas (Morocco).
Courier Forschungsinstitut Senckenberg, 238: 1-109, 44 fig., 13 pl., 23 tab., Frankfurt.