Gastrolit – razlika između verzija
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* Wings, Oliver (2004): Identification, distribution, and function of gastroliths in dinosaurs and extant birds with emphasis on ostriches (''Struthio camelus''). Ph.D. Thesis, The University of Bonn, Bonn, Germany, 187 pp. URN: urn:nbn:de:hbz:5N-04626 [http://hss.ulb.uni-bonn.de/diss_online/math_nat_fak/2004/wings_oliver/ PDF fulltext]
* Wings, Oliver (2007): A review of gastrolith function with implications for fossil vertebrates and a revised classification. ''Acta Palaeontologica Polonica'' '''52'''(1): 1-16. [http://web.archive.org/web/20080228014114/http://www.app.pan.pl/acta52/app52-001.pdf PDF fulltext]
* Wings, Oliver & Sander, P.M. (2007): No [[gastric mill]] in sauropod dinosaurs: new evidence from analysis of gastrolith mass and function in ostriches. ''[[Proceedings of the Royal Society#Proceedings of the Royal Society B|Proc. R. Soc. B]]'' '''274'''(1610): 635–640. <small>{{doi|10.1098/rspb.2006.3763}} {{PMID
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