Strophomenata - Orthotetida - Schuchertellidae

Alternative combinations: Orthotetes semiplanus, Streptorhynchus (Schuchertella) semiplana, Streptorhynchus semiplanum, Streptorhynchus semiplanus

Synonym: Streptorhynchus (Schuchertella) purdoni Reed 1944

Full reference: W. Waagen. 1884. Productus Limestone Fossils, Part IV, fas. 3. Salt Range Fossils, Palaeontologia Indica, Series 13 1(4):547-610

Belongs to Schuchertella according to G. Crippa and L. Angiolini 2012

Sister taxa: Schuchertella bassa, Schuchertella beyrichi, Schuchertella cooperi, Schuchertella fushuiensis, Schuchertella humboldtensis, Schuchertella luliangensis, Schuchertella probabilis, Schuchertella quryatensis, Schuchertella shenshuensis, Schuchertella subvexa, Schuchertella tapina, Streptorhynchus (Schuchertella) asperulus, Streptorhynchus (Schuchertella) praeceps

Average measurements (in mm): shell 18.0 x 22.8, valve 15.2 x 23.1