Publication: Fossil Focus: Ammonoids
Fossil Focus: Ammonoids
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De Baets, K., Hoffmann, R., Sessa, J. A., & Klug, C. (2016). Fossil Focus: Ammonoids. 1–15. http://www.palaeontologyonline.com/articles/2016/fossil-focus-ammonoids/
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Introduction: Ammonoids (Ammonoidea) are an extinct group of marine invertebrates with an external shell. They were cephalopods, and hence closely related to modern cuttlefish, squid, octopuses and the pearly nautilus. In a non-scientific context, they are commonly called ammonites, but that term really includes only Jurassic and Cretaceous forms in its stricter scientific sense. The Ammonoidea as a whole lived from the Early Devonian to the earliest Palaeogene period, covering a timespan of about 350 million years. Normally, only the
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De Baets, K., Hoffmann, R., Sessa, J. A., & Klug, C. (2016). Fossil Focus: Ammonoids. 1–15. http://www.palaeontologyonline.com/articles/2016/fossil-focus-ammonoids/