Trilobites and agnostids from the Goyder Formation (Cambrian Series 3, Guzhangian; Mindyallan), Amadeus Basin, central Australia Author Smith, Patrick M. Author Paterson, John R. Author Brock, Glenn A. text Zootaxa 2018 2018-03-19 4396 1 1 67 journal article 30484 10.11646/zootaxa.4396.1.1 918f2145-a708-460e-b19b-4f67e6c99b30 1175-5326 1202723 8EEBE6DE-0ECC-4B9C-AD14-01438291782B Liostracina Monke, 1903 Type species. Liostracina krausei Monke, 1903 . Discussion. Extensive discussion of Liostracina Monke, 1903 was provided by Öpik (1967). More recently, Park et al. (2014) provided an up-to-date commentary on the genus, a complete species list, as well as remarks on the phylogenetic position of the trinucleoids. Species of Liostracina are typically differentiated by variations in the anterior border furrow, depth of the median preglabellar furrow, development of the ocular ridges, bacculae and ornament ( Shergold et al. 2007 ).