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Temporal range: Ludlow
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Agnatha
Subclass: Thelodonti
Order: Thelodontiformes
Family: Longodidae
Märss, 2006
Genus: Longodus
Märss, 2006
Species: L. acicularis
Binomial name
Longodus acicularis
Märss, 2006 [1]

Longodus is an extinct genus of thelodont, placed in its own family[1][2]Longopdidae – which existed in what is now Estonia during the Ludlow epoch of the upper Silurian period.[3] The type and only species is Longodus acicularis.[1][3]


  1. ^ a b c T. Märss (2006). "Thelodonts (Agnatha) from the basal beds of the Kuressaare Stage, Ludlow, Upper Silurian of Estonia" (PDF). Proceedings of the Estonian Academy of Sciences, Geology. 55 (1): 43–66. 
  2. ^ Mark V. H. Wilson & Tiiu Märss (2009). "Thelodont phylogeny revisited, with inclusion of key scale-based taxa" (PDF). Estonian Journal of Earth Sciences. 58 (4): 297–310. doi:10.3176/earth.2009.4.08. 
  3. ^ a b Märss, T., Turner, S. & Karatajūte-Talimaa, V. 2007. "Thelodonti". In H.P. Schultze. Agnatha II (PDF). 1B. Verlag Dr. Friedrich Pfeil, München. p. 143.