Origin and evolution of angiosperms pdf
A THEORY OF ANGIOSPERM EVOLUTION - Axelrod - - Evolution - Wiley Online LibraryMost users should sign in with their email address. If you originally registered with a username please use that to sign in. To purchase short term access, please sign in to your Oxford Academic account above. Don't already have an Oxford Academic account? Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide.
The ancestral flower of angiosperms and its early diversification
Request PDF on ResearchGate | Origin and Early Evolution of Angiosperms | Contributions from paleobotany, phylogenetics, genomics, developmental biology.
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Core angiosperms. The flowering plants , also known as angiosperms , Angiospermae   or Magnoliophyta ,  are the most diverse group of land plants , with 64 orders , families , approximately 13, known genera and , known species. However, they are distinguished from gymnosperms by characteristics including flowers , endosperm within the seeds , and the production of fruits that contain the seeds.
The angiosperm carpel is one of the defining characteristics of flowering plants. Carpels are unique to angiosperms and are found in all of its members. Yet, due to the distinctive structure and function of carpels, deducing homologies among carpels and other seed-plant organs has been difficult. Progress in understanding carpel homologies and evolution is being made in a number of directions. Homologies, as well as transformations between them, have been proposed among angiosperms and other seed plants. These include homologies among the reproductive structures of Glossopterids, Caytonia , and other fossil taxa e. Recent studies have examined the homologies and transformations among female reproductive organs through outgroup comparison e.