Redigerer Drøvtyggere (avsnitt)

== Referanser ==
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<ref name="Bibi (2013)">Bibi, F. (2013). A multi-calibrated mitochondrial phylogeny of extant Bovidae (Artiodactyla, Ruminantia) and the importance of the fossil record to systematics. ''BMC evolutionary biology'', '''13'''(1), 166. https://doi.org/10.1186/1471-2148-13-166</ref>

<ref name="Castelló (2016)">Castelló, José R. Princeton Field Guides – ''Bovids of the World: antelopes, gazelles, cattle, goats, sheep, and relatives''. 454–456 pages. Princeton University Press, Princeton and Oxford 2016. ISBN 978-0-691-16717-6</ref>

<ref name="Editors of Encyclopaedia Britannica (2019)">Editors of Encyclopaedia Britannica (2019) Ruminant. Encyclopædia Britannica, publ. February 21, 2019. https://www.britannica.com/animal/ruminant Besøkt 2020-11-03</ref>

<ref name="Gjefsen (2016)">Torger Gjefsen (2016) [https://www.agropub.no/fagartikler/fordoyelsessystemet-hos-storfe Fordøyelsessystemet hos storfe]. Agropub, 19. sep. 2016</ref>

<ref name="Hassanin & Douzery (2003)">Hassanin, A., & Douzery, E. J. (2003). Molecular and morphological phylogenies of Ruminantia and the alternative position of the Moschidae. ''Systematic biology'', '''52'''(2), 206-228. https://doi.org/10.1080/10635150390192726</ref>

<ref name="Hassanin et al. (2011)">Hassanin A, Delsuc F, Ropiquet A, Hammer C, Jansen van Vuuren B, Matthee C, Ruiz-Garcia M, Catzeflis F, Areskoug V, Nguyen TT, Couloux A: Pattern and timing of diversification of Cetartiodactyla (Mammalia, Laurasiatheria), as revealed by a comprehensive analysis of mitochondrial genomes. ''C R Biol.'' 2012, '''335''': 32-50. https://doi.org/10.1016/j.crvi.2011.11.002</ref>

<ref name="Owen-Smith (1988)">Owen-Smith, R. N. (1988). Megaherbivores: the influence of very large body size on ecology. Cambridge university press. ISBN 9780521426374</ref>

<ref name="Zhou et al. (2019)">Zhou, Z., Winkler, D. E., Fortuny, J., Kaiser, T. M., & Marcé-Nogué, J. (2019). Why ruminating ungulates chew sloppily: Biomechanics discern a phylogenetic pattern. ''PloS one'', '''14'''(4), e0214510. https://doi.org/10.1371/journal.pone.0214510</ref>

<ref name="Østbye (2018)">Østbye, Eivind; Aarnes, Halvor: ''drøvtyggere'' i Store norske leksikon på snl.no. Hentet 3. november 2020 fra https://snl.no/dr%C3%B8vtyggere</ref>
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