Geyer, G., Landing, E., Höhn, S., Linnemann, U., Meier, S., Servais, T., Wotte, T., Herbig, H., 2019. Revised Cambrian stratigraphy in the Franconian Forest (Frankenwald), Germany, reveals typical West Gondwanan succession in the Saxothuringian belt. Newsletters on Stratigraphy 52, 377-433. doi:10.1127/nos/2019/0495

Geyer, G., Landing, E., Meier, S., Höhn, S., 2022. Oldest known West Gondwanan graptolite: Ovetograptus? sp. (lower Agdzian/lowest Wuliuan; basal Middle Cambrian) of the Franconian Forest, Germany, and review of pre-Furongian graptolithoids. PalZ doi:10.1007/s12542-022-00627-5