Fruits of Icacinaceae from the Eocene of Southeastern North America and Their Biogeographic Implications
2011; University of Chicago Press; Volume: 172; Issue: 7 Linguagem: Inglês
10.1086/660877
ISSN1537-5315
AutoresGregory W. Stull, Brian R. Moore, Steven R. Manchester,
Tópico(s)Plant Parasitism and Resistance
ResumoWe describe three members of the pantropical family Icacinaceae from the Eocene Claiborne Group of Tennessee and Mississippi, providing the first recognition of this family from the Mississippi Embayment of southeastern North America. Natsiatum wilcoxiana (Berry) comb. nov. and Phytocrene densipunctata sp. nov. represent extant genera presently confined to Southeast Asia and Malesia. Croomiocarpon mississippiensis gen. et sp. nov. represents an extinct genus with affinities to the tribe Iodeae. These fossils increase the generic diversity of Icacinaceae's fossil record and expand our understanding of the historical distribution of this family. Given the similarity of N. wilcoxiana and P. densipunctata with several fossils known from the Eocene of Europe, these records suggest a broader pattern of floristic connection between southeastern North America and Europe during the Eocene.
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