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Dinosaur 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 · medium

The 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:biogeography
morphology · contested

Latest-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:morphology
fossil-range · contested

Poaceae 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
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