Authors Year Title
Korn & Klug 2002 Ammoneae Devonicae.
In: Fossilium Catalogus, I: Animalia (edit. Riegraf,W.), Pars 138:
375 p., 238 fig., 4 tab., Leiden (Backhuys Publ.).
Vanuxem 1842 Geology of New York, Part III, Comprising the survey of the third geological district.
1-306, Albany, NY.