Třída: Actinopterygii - paprskoploutví
Řád: Siluriformes - sumci
Čeleď: Doradidae - trnovcovití

Typový druh: Oxydoras elongatus Boulenger, 1898

Reference: Eigenmann C. H. 1925. A review of the Doradidae, a family of South American Nematognathi, or catfishes. Trans. Am. Philos. Soc. (N. S.) v. 22 (pt 5). 280-365.

Přehled druhů

• Nemadoras elongatus (Boulenger, 1898)
  Boulenger, G. A.   1898. On a collection of fishes from the Rio Jurua, Brazil. Trans. Zool. Soc. Lond. v. 14 (pt 7, no. 2): 421-428, Pls. 39-42.
• Nemadoras hemipeltis (Eigenmann, 1925)
  Eigenmann, C. H.   1925. A review of the Doradidae, a family of South American Nematognathi, or catfishes. Trans. Am. Philos. Soc. (n. s.) v. 22 (pt 5): 280-365, Pls. 1-27.
• Nemadoras humeralis (Kner, 1855)
  Kner, R.   1855. Ichthyologische Beiträge [Subtitles I-III]. Sitzungsber. Akad. Wiss. Wien v. 17: 92-162, Pls. 1-6.
• Nemadoras leporhinus (Eigenmann, 1912)
  Eigenmann, C. H.   1912. The freshwater fishes of British Guiana, including a study of the ecological grouping of species, and the relation of the fauna of the plateau to that of the lowlands. Mem. Carnegie Mus. v. 5 (no. 1): i-xxii + 1-578, Pls. 1-103.
• Nemadoras trimaculatus (Boulenger, 1898)
  Boulenger, G. A.   1898. On a collection of fishes from the Rio Jurua, Brazil. Trans. Zool. Soc. Lond. v. 14 (pt 7, no. 2): 421-428, Pls. 39-42.

Statistické údaje

Počet druhů: 5