A eudicot from the Early Cretaceous of China

@article{Sun2011AEF,
  title={A eudicot from the Early Cretaceous of China},
  author={Ge Sun and David L. Dilcher and Hongshan Wang and Zhiduan Chen},
  journal={Nature},
  year={2011},
  volume={471},
  pages={625-628}
}
The current molecular systematics of angiosperms recognizes the basal angiosperms and five major angiosperm lineages: the Chloranthaceae, the magnoliids, the monocots, Ceratophyllum and the eudicots, which consist of the basal eudicots and the core eudicots. The eudicots form the majority of the angiosperms in the world today. The flowering plants are of exceptional evolutionary interest because of their diversity of over 250,000 species and their abundance as the dominant vegetation in most… 

A eudicot leaf from the Lower Cretaceous (Aptian, Araripe Basin) Crato Konservat-Lagerstätte.

The combination of characters preserved in the fossil supports the interpretation that B. pinnatissecta was an herbaceous eudicot similar to some members of Ranunculales and distinguished from other lobate Aptian angiosperms by leaf shape, presence of multiple orders of reticulate venation, and the absence of glandular teeth.

Accelerated evolution of early angiosperms: Evidence from ranunculalean phylogeny by integrating living and fossil data

A hypothesis that the basal eudicots might have experienced an accelerated evolution and diversification during the latest Barremian and earliest Aptian, leading to the stem groups of at least six extant families or lineages, 10–15 Myr earlier than currently documented is suggested.

Recognising angiosperm clades in the Early Cretaceous fossil record

  • J. Doyle
  • Environmental Science, Geography
  • 2015
Associated flowers indicate that palmately lobed ‘platanoids’ and Sapindopsis are both stem relatives of Platanus, while Nelumbites was related to Nelumbo (also Proteales) and Spanomera to Buxaceae.

The rise of angiosperm-dominated herbaceous floras: Insights from Ranunculaceae

It is found that Ranunculaceae became differentiated in forests between about 108–90 Ma, and diversification rates markedly elevated during the Campanian, mainly resulted from the rapid divergence of the non-forest lineages, but did not change across the Cretaceous-Paleogene boundary.

Potomacapnos apeleutheron gen. et sp. nov., a new Early Cretaceous angiosperm from the Potomac Group and its implications for the evolution of eudicot leaf architecture.

  • N. JudL. Hickey
  • Environmental Science, Biology
    American journal of botany
  • 2013
These are the oldest eudicot megafossils from North America, and they show complex leaf architecture reflecting developmental pathways unique to extant eudicots.

Sensitive phylogenetics of Clematis and its position in Ranunculaceae

The results provide a phylogenetic background for a natural section-level classification of Clematis and strongly imply that Anemone s.l. is a grade with respect to the Anemoclema + Clematis clade.

Evolution of Angiosperm Pollen: 4. Basal Eudicots1

Tests of correlated evolution suggest that the herbaceous growth form is significantly associated with spheroidal pollen shape and the arborescent growth form with oblate pollen shape, however, no significant correlations were found between anemophily and aperture number.

Resolution of deep angiosperm phylogeny using conserved nuclear genes and estimates of early divergence times

The molecular clock estimates of Mesangiospermae diversification during the late to middle Jurassic correspond well to the origins of some insects, which may have been a factor facilitating early angiosperm radiation.

First evidence of ranunculids in Early Cretaceous tropics

Two fossil-species of eudicots belonging to a new extinct genus Santaniella gen. nov are described from this region of northern Gondwanan origin, and their first unequivocal occurrence in a low-latitude area supports further the hypothesis of a widespread radiation of the earliest diverging eudicot lineage by this early age.
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