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Temporal range: Paleocene
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Condylarthra
Family: Pleuraspidotheriidae
Genus: Orthaspidotherium
Lemoine, 1885
O. edwardsi
Binomial name
Orthaspidotherium edwardsi
Lemoine, 1885

Orthaspidotherium was a European Paleocene genus of early herbivorous mammals of the family Pleuraspidotheriidae.[1] It was included in the family Meniscotheriidae by Teilhard de Chardin in 1921-1922 and was subsequently separated into the family Pleuraspidotheriidae, before being placed in the family Phenacodontidae.[2] The first complete skull of O. edwardsi was described in 2010, and the same paper once again places it in Pleuraspidotheriidae.[1][3] A 2017 study further reiterates this view.[4]


  1. ^ a b Ladevèze, Sandrine; Missiaen, Pieter; Smith, Thierry (1 January 2010). "First Skull Of Orthaspidotherium edwardsi (Mammalia, "Condylarthra") From The Late Paleocene Of Berru (France) And Phylogenetic Affinities Of The Enigmatic European Family Pleuraspidotheriidae". Journal of Vertebrate Paleontology. 30 (5): 1559–1578. doi:10.1080/02724634.2010.501440. JSTOR 40864368. S2CID 85220182.
  2. ^ Williamson, Thomas E.; Lucas, Spencer G. (1992). Meniscotherium (Mammalia, "Condylarthra") from the Paleocene-Eocene of Western North America: Bulletin 1. New Mexico Museum of Natural History and Science. p. 49. Retrieved 6 June 2016.
  3. ^ Smith, Thierry; Quesnel, Florence; Plöeg, Gaël De; Franceschi, Dario De; Métais, Grégoire; Bast, Eric De; Solé, Floréal; Folie, Annelise; Boura, Anaïs; Claude, Julien; Dupuis, Christian; Gagnaison, Cyril; Iakovleva, Alina; Martin, Jeremy; Maubert, François; Prieur, Judicaël; Roche, Emile; Storme, Jean-Yves; Thomas, Romain; Tong, Haiyan; Yans, Johan; Buffetaut, Eric (29 January 2014). "First Clarkforkian Equivalent Land Mammal Age in the Latest Paleocene Basal Sparnacian Facies of Europe: Fauna, Flora, Paleoenvironment and (Bio)stratigraphy". PLOS ONE. 9 (1): e86229. Bibcode:2014PLoSO...986229S. doi:10.1371/journal.pone.0086229. ISSN 1932-6203. PMC 3906055. PMID 24489703.
  4. ^ Halliday, T.J.D.; Upchurch, P.; Goswami, A. (2017). "Resolving the relationships of Paleocene placental mammals". Biological Reviews. 92 (1): 521–550. doi:10.1111/brv.12242. PMC 6849585. PMID 28075073.