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- Furongian Series (Cambrian) Biostratigraphy of Scandinavia – a Revision
- The Lower and Middle Cambrian of Sweden: Trilobites, Biostratigraphy and Intercontinental Correlation
- Ptychagnostus Atavus(Tullberg, 1880) (Trilobita: Agnostida)
- A New Type of Entombment of Peronopsis (Agnostida) in a Hyolithid Conch
- Redalyc.Review of the Cambrian Stratigraphy of the Argentine
- Smithsonian Miscellaneous Collections
- Biogeography and Biofacies Pattems of Middle Cambrian Polymeroid Trilobites from North Greenland: Palaeogeographic and Palaeo-Oceanographic Implications
- Sidneyia Inexpectans from the Burgess Shale Fauna Axelle Zacaï, Jean Vannier, Rudy Lerosey-Aubril
- Trilobite Fauna (Wuliuan Stage, Miaolingian Series, Cambrian) of the Lower Lakeview Limestone, Pend Oreille Lake, Idaho
- New Reticulosan Sponges from the Middle Cambrian of Sonora, Mexico
- The Diverse Radiodont Fauna from the Marjum Formation of Utah, USA (Cambrian: Drumian)
- Proquest Dissertations
- United States Department of the Interior Geological Survey Short Papers For
- Speeies Diversity Among Agnostoid Trilobites