References / paperDinosaur coprolites and the early evolution of grasses and grazers
Prasad, V.; Strömberg, C.A.E.; Alimohammadian, H.; Sahni, A.
Year2005
Source roleprimary-study
DOI / ID10.1126/science.1118806
Fitness and scope
taxonomy · range · morphology · ecology · geochronology
Reports diagnostic grass phytolith morphotypes from latest-Cretaceous Lameta Formation dinosaur coprolites; affinity and depositional age remain the limiting evidence.
Claim ledger
biogeography · mediumThe late-Cretaceous grass evidence used here is confined to diagnostic phytolith morphotypes in Lameta Formation dinosaur coprolites in central India; it does not identify a geographic origin or global distribution of grasses.
claim:taxon:poaceae:biogeographymorphology · contestedLatest-Cretaceous Lameta coprolites preserve phytolith morphotypes interpreted as diagnostic of grasses and assigned to at least five living-grass subclades; these microscopic remains are not a complete grass body plan.
claim:taxon:poaceae:morphologyfossil-range · contestedPoaceae is displayed at 67–0 Ma only as a latest-Cretaceous-phytolith-to-living navigation anthology: diagnostic Lameta coprolite phytoliths support grass presence but do not establish a body-fossil FAD, exact crown origin or uninterrupted global range.
claim:taxon:poaceae:range-boundary-rc50