Cenomanian florule of Nammoura, Lebanon |
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| Authors: | Valentin Krassilov Flavio Bacchia |
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| Institution: | a Paleontological Institute, 1123 Profsoyusnaya St. Moscow, 117641, Russia;b Stoneage S. R. L. Via Torino, 15, 34123, Trieste, Italy |
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| Abstract: | The mid-Cenomanian fish beds of Nammoura, Mont-Liban district, Lebanon contain a diverse fauna of aquatic and terrestrial vertebrates, a few crustaceans and moderately well-preserved plant remains of which a single species,Sapindopsis anhouryi , was previously described by Dilcher & Basson (1990). We add 11 species of ferns, gymnosperms and angiosperms of which Nammouria cretacea gen. et sp. nov, Nupharanthus cretacea gen. et sp. nov., Sapindopsis libanensis sp. nov. and Nammourophyllum altingioides gen. et sp. nov. are new taxa. The florule differs markedly from both Early Cretaceous and Turonian plant assemblages of the Middle East, thereby representing a distinct stage of the regional floristic evolution. Its phytogeographic affinities are with contemporaneous floras of North America, Central Europe and the Crimea. A combination of such features as xeromorphism, the prevalence of compound leaves, and the presence of deciduous angiosperm components and gymnosperms may indicate climatic conditions similar to those of the present day Mediterranean. |
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| Keywords: | aquatic ferns early angiosperms Middle East Cretaceous palaeoclimates |
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