Amargastegos

Amargastegos
Temporal range: Early Cretaceous, 125 Ma
↓
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Dinosauria
Order: †Ornithischia
Clade: †Eurypoda
Suborder: †Stegosauria
Genus: †Amargastegos
Ulansky, 2014
Species: †A. brevicollus
Binomial name
Amargastegos brevicollus
Ulansky, 2014

Amargastegos (meaning "covered being from La Amarga") is a dubious genus of extinct stegosaurid ornithischian dinosaur. The type species and only current species is A. brevicollus, the species name derived from the unique trait of short cervical vertebrae. Amargastegos is one of few genera of stegosaurid from the Southern Hemisphere, along with traces from Bolivia and the South African genus Paranthodon.[1] The new name is registered in the Official Registration of Zoological Nomenclature, or Zoobank, a requirement for validity.[2] The Amargastegos holotype and only specimen, MACN N-43,[1] comes from the La Amarga Formation of Argentina, and dates specifically to the boundary of the Barremian and Aptian, about 125 mya. It includes some dorsal osteoderms, the cervical and caudal vertebrae, and one skull bone.[3] In 2016, Peter Malcolm Galton and Kenneth Carpenter declared it a nomen dubium, establishing it as Stegosauria indet.[4]

References

  1. 1 2 Ulansky, R.E (2014). "Эволюция стегозавров (Dinosauria; Ornithischia)" [Evolution of the Stegosaurs (Dinosauria; Ornithischia)] (PDF). Dinologia: 1–35.
  2. ↑ "IZCN Zoobank: Amargastegos".
  3. ↑ Ulansky, R.E. (2014). "Dinosaurs Classification. Basal Thyreophora & Stegosauria" (PDF). Dinologia: 1–8.
  4. ↑ Galton, Peter M. & Carpenter, Kenneth, 2016, "The plated dinosaur Stegosaurus longispinus Gilmore, 1914 (Dinosauria: Ornithischia; Upper Jurassic, western USA), type species of Alcovasaurus n. gen.", Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 279(2): 185-208
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