Dinosaur Coprolites and the Early Evolution of Grasses and Grazers

@article{Prasad2005DinosaurCA,
  title={Dinosaur Coprolites and the Early Evolution of Grasses and Grazers},
  author={Vandana Prasad and Caroline A. E. Str{\"o}mberg and Habib Alimohammadian and Ashok Sahni},
  journal={Science},
  year={2005},
  volume={310},
  pages={1177 - 1180}
}
Silicified plant tissues (phytoliths) preserved in Late Cretaceous coprolites from India show that at least five taxa from extant grass (Poaceae) subclades were present on the Indian subcontinent during the latest Cretaceous. This taxonomic diversity suggests that crown-group Poaceae had diversified and spread in Gondwana before India became geographically isolated. Other phytoliths extracted from the coprolites (from dicotyledons, conifers, and palms) suggest that the suspected dung producers… 
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References

SHOWING 1-10 OF 26 REFERENCES

Dinosaurs, dung beetles, and conifers; participants in a Cretaceous food web

Late Cretaceous trace fossils from the Two Medicine Formation of Montana are interpreted as herbivorous dinosaur feces reworked by scarabaeine dung beetles. These irregular blocks of comminuted plant…

Fungi in dinosaurian (Isisaurus) coprolites from the Lameta Formation (Maastrichtian) and its reflection on food habit and environment

On the basis of epiphyllous fungi it is postulated that the dinosaurs lived in a tropical-subtropical climate.

Paleobiological implications of Campanian coprolites

Dinosaur coprolites from the Late Cretaceous (Maastrichtian) Lameta Formation of India: isotopic and other markers suggesting a C3 plant diet

Decoupled taxonomic radiation and ecological expansion of open-habitat grasses in the Cenozoic of North America.

  • C. Strömberg
  • Environmental Science, Geography
    Proceedings of the National Academy of Sciences of the United States of America
  • 2005
Data from 99 Eocene to Miocene phytolith assemblages from the North American continental interior, constituting the only high-resolution mid-Cenozoic record of grasses, show that open-habitat grasses had undergone considerable taxonomic diversification by the earliest Oligocene but that they did not become ecologically dominant in North America until 7-11 million years later.

Did dinosaurs invent flowers? Dinosaur—angiosperm coevolution revisited

  • P. BarrettK. Willis
  • Environmental Science, Geography
    Biological reviews of the Cambridge Philosophical Society
  • 2001
It is concluded that there are no strong spatiotemporal correlations in support of the hypothesis that dinosaurs were causative agents in the origin of angiosperms; however, dinosaur–angiosperm interactions in the Late Cretaceous may have resulted in some coevolutionary interactions, although direct evidence of such interactions is scanty at present.

Using phytolith assemblages to reconstruct the origin and spread of grass-dominated habitats in the great plains of North America during the late Eocene to early Miocene

Cosmopolitanism among Gondwanan Late Cretaceous mammals

The occurrence of a highly specialized and distinctive group of extinct mammals, the Sudamericidae (Gondwanatheria), in the Late Cretaceous of Madagascar and India is reported, which is the first evidence of gondwanatheres outside South America and the first indication of cosmopolitanism among Late CRETaceous Gondwanan mammals.

New Late Cretaceous mammals from the Intertrappean beds of Rangapur, India and paleobiogeographic framework

A new mammal−bearing locality from the Intertrappean beds (Maastricthian) of Rangapur, Andhra Pradesh, India pro− vides isolated teeth referable to Deccanolestes and a new eutherian, Sahnitherium…

Phylogeny and subfamilial classification of the grasses (Poaceae)

A large collaborative effort has yiel(led a comprehensive study of the phylogeny and a new suhfanilial classification of the grass family (Poaceae/Graminieae) and 1 new subfamily (Danthonioideae) is proposed.