Rare anomalous dental morphologies found in raccoon dog (Nyctereutes procyonoides) and their implication to dental morphology of fossil mammals

• Tsubamoto Takehisa

  Graduate School of Science and Engineering, Ehime University

書誌事項

タイトル別名

• Rare anomalous dental morphologies found in raccoon dog (<i>Nyctereutes procyonoides</i>) and their implication to dental morphology of fossil mammals

抄録

Two rare anomalous dental morphologies were observed in living Japanese raccoon dogs (Nyctereutes procyonoides viverrinus). One specimen exhibits an extra third root on P3, and the other exhibits a mesiodistally shortened, buccally swelled, and occlusally triangular P4. Analogous morphologies also occur in two Eocene mammalian species, Brachyhyops viensis and Brachyhyops trofimovi (Artiodactyla; Entelodontidae). Brachyhyops viensis has a third root on P3, and B. trofimovi has a mesiodistally shortened, buccally swelled, and occlusally triangular p4. These morphologies of the Eocene species have been considered as diagnostic at the species level. However, the presence of analogous dental morphologies in the anomalous teeth of the raccoon dog imply a possibility that a part of the species diagnoses of B. viensis and B. trofimovi may be not diagnostic characters but anomalous morphologies.

収録刊行物

• 地質学雑誌

  地質学雑誌 121 (6), 185-189, 2015-06-10

  一般社団法人 日本地質学会

キーワード

• <i>Brachyhyops</i>
• dental anomaly
• diagnosis
• fossil species
• raccoon dog

詳細情報

• CRID: 1390282681218185984
• NII論文ID: 130005089849
• NII書誌ID: AN00141768
• DOI: 10.5575/geosoc.2015.0015
• ISSN: 13499963
• ISSN: 00167630
• NDL書誌ID: 026604879
• Web Site: http://id.ndl.go.jp/bib/026604879
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026604879
• Web Site: https://www.jstage.jst.go.jp/article/geosoc/121/6/121_2015.0015/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可