Thomas, G. A. (1958). The Permian Orthotetacea of Western Australia. <em>Bureau of Mineral Resources, Geology and Geophysics Bulletin.</em> 39: 1-158.[details] Available for editors
original descriptionThomas, G. A. (1958). The Permian Orthotetacea of Western Australia. <em>Bureau of Mineral Resources, Geology and Geophysics Bulletin.</em> 39: 1-158.[details] Available for editors