Fig. 11

Andrew Gale (with brown hat; co-author and professor emeritus at Portsmouth University, UK), Holly Turner (PhD student in carbon isotopes and dinoflagellates of Gale and Gradstein at Portsmouth University, UK) and David Watkins (professor in nannofossils and stratigraphy at U of Nebraska, Lincoln, USA) in the type section of the Tojeira Formation, Montejunto area, Portugal (April 2016)