![Chapter 27 Cambrian–Ordovician cephalopod palaeogeography and diversity | Geological Society, London, Memoirs Chapter 27 Cambrian–Ordovician cephalopod palaeogeography and diversity | Geological Society, London, Memoirs](https://www.lyellcollection.org/cms/10.1144/M38.27/asset/bae32fe8-5569-46ef-a1f1-380f57bd6888/assets/images/large/2570ch27f01.jpg)
Chapter 27 Cambrian–Ordovician cephalopod palaeogeography and diversity | Geological Society, London, Memoirs
![Trilobite biostratigraphy of the Cambrian 5 and Drumian stages, Series 3 (Laurentian Delamaran, Topazan, and Marjuman stages, Lincolnian Series) of the lower Emigrant Formation at Clayton Ridge, Esmeralda County, Nevada | Journal Trilobite biostratigraphy of the Cambrian 5 and Drumian stages, Series 3 (Laurentian Delamaran, Topazan, and Marjuman stages, Lincolnian Series) of the lower Emigrant Formation at Clayton Ridge, Esmeralda County, Nevada | Journal](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20180522103551194-0861:S0022336017001305:S0022336017001305_fig8g.jpeg?pub-status=live)
Trilobite biostratigraphy of the Cambrian 5 and Drumian stages, Series 3 (Laurentian Delamaran, Topazan, and Marjuman stages, Lincolnian Series) of the lower Emigrant Formation at Clayton Ridge, Esmeralda County, Nevada | Journal
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Trilobite biostratigraphy of the Cambrian 5 and Drumian stages, Series 3 (Laurentian Delamaran, Topazan, and Marjuman stages, Lincolnian Series) of the lower Emigrant Formation at Clayton Ridge, Esmeralda County, Nevada | Journal
![Trilobite biostratigraphy of the Cambrian 5 and Drumian stages, Series 3 (Laurentian Delamaran, Topazan, and Marjuman stages, Lincolnian Series) of the lower Emigrant Formation at Clayton Ridge, Esmeralda County, Nevada | Journal Trilobite biostratigraphy of the Cambrian 5 and Drumian stages, Series 3 (Laurentian Delamaran, Topazan, and Marjuman stages, Lincolnian Series) of the lower Emigrant Formation at Clayton Ridge, Esmeralda County, Nevada | Journal](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20180522103551194-0861:S0022336017001305:S0022336017001305_fig9g.jpeg?pub-status=live)
Trilobite biostratigraphy of the Cambrian 5 and Drumian stages, Series 3 (Laurentian Delamaran, Topazan, and Marjuman stages, Lincolnian Series) of the lower Emigrant Formation at Clayton Ridge, Esmeralda County, Nevada | Journal
![Chapter 27 Cambrian–Ordovician cephalopod palaeogeography and diversity | Geological Society, London, Memoirs Chapter 27 Cambrian–Ordovician cephalopod palaeogeography and diversity | Geological Society, London, Memoirs](https://www.lyellcollection.org/cms/10.1144/M38.27/asset/3b58720e-a66a-4312-b9bb-7b4a4a5fe4cc/assets/images/large/2570ch27f04.jpg)