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pubmed.ncbi.nlm.nih.gov
Prasad, Vandana; Strömberg, Caroline A.E.; Alimohammadian, Habib; & Sahni, Ashok. 2005. Dinosaur coprolites and the early evolution of grasses and grazers. Science. svezak 310 (broj 5751): str. 1177. – 1180. doi:10.1126/science.1118806. PMID16293759