Christiania

Congreve, C. R.; Krug, A. Z.; Patzkowsky, M. E. (2015). Phylogenetic revision of the Strophomenida, a diverse and ecologically important Palaeozoic brachiopod order. <em>Palaeontology.</em> 58(4): 743-758.

Hall, J.; & Clarke, J. M. (1892–1894). An introduction to the study of the genera of Palaeozoic Brachiopoda. <em>Natural History of New York, New York State Geological Survey.</em> 8: (part 1) 1-367, plates 1-20; (part 2) 1-394, plates 21-84.