Journal
BOTANICAL REVIEW
Volume 76, Issue 1, Pages 83-135Publisher
SPRINGER
DOI: 10.1007/s12229-010-9040-1
Keywords
Asteridae; Campanulids; Euasteridae; Fossil; Lamiids; Minimum Age
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Funding
- Sigma Xi Cornell Chapter
- Mario Einaudi Center for International Studies
- Grants-in-Aid of Research (Sigma Xi)
- Paleontological Society
- Mid-America Paleontology Society (MAPS)
- American Society of Plant Taxonomists (ASPT)
- Botanical Society of America (BSA)
- Harold E. Moore, Jr Memorial and Endowment Funds
- Department of Plant Biology
- Cornell University
- NSF [DEB 01-08369]
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The Asteridae is a group of some 80,000 species of flowering plants characterized by their fused corollas and iridoid compounds. Recent phylogenetic analyses have helped delimit the group and have identified four main clades within it; Cornales, Ericales, Lamiids and Campanulids, with the last two collectively known as the Euasteridae. A search for the oldest fossils representing asterids yielded a total of 261 records. Each of these fossils was evaluated as to the reliability of its identification. The oldest accepted fossils for each clade were used to estimate minimum ages for the whole of the Asteridae. The results suggest that the Asteridae dates back to at least the Turonian, Late Cretaceous (89.3 mya) and that by the Late Santonian-Early Campanian (83.5 mya) its four main clades were already represented in the fossil record.
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