Abstract
Solanaceae is a large cosmopolitan family of angiosperms that includes some 92–100 genera and 2300–2500 species. It has been the object of a great deal of attention because of its economic importance as a food source (tomatoes, potatoes, peppers), because it includes tobacco, and is source of drugs (alkaloids). However its fossil history has been elusive with relatively few seemingly reliable reports throughout Tertiary times and no solid bases for molecular dating models to pinpoint important events in its diversification and evolution. While the great diversity found within the family makes it difficult to find morphological characters that define it, in general, the flowers have an overall distinctive morphology with some diagnostic morphological characters. Thus, as is often the case, flowers are potentially the most reliable indicators of the family in the fossil record. There have been a number of reports of flowers representing Solanaceae in the Tertiary. Yet, we report here that upon reinvestigation only one taxon remains as a plausible representative of the family while one of the most notable and frequently cited fossil Solanaceae from the Tertiary of North America is clearly a member of the family Rhamnaceae consistent with the fossil leaf record.
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Millan, M., Crepet, W. The Fossil Record of the Solanaceae Revisited and Revised—The Fossil Record of Rhamnaceae Enhanced. Bot. Rev. 80, 73–106 (2014). https://doi.org/10.1007/s12229-014-9134-2
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DOI: https://doi.org/10.1007/s12229-014-9134-2