(Tarjados - after the Sierra de los Tarjados, a mountain range
near where the holotype was discovered).
Named By: A. Arcucci & C. A. Mariscano - 1998.
Classification: Chordata, Reptilia, Archosauriformes, Doswelliidae.
Species: T. ruthae (type).
Known locations: Argentina, La Rioja Province - Chanares Formation.
Time period: Ladinian of the Triassic.
Fossil representation: Partial remains of armour, post cranial skeleton and skull.
study about Tarjadia so far has been concerning the
(sometimes called scutes), pieces of bone that resided within the
skin. The osteoderms of Tarjadia are very
distinctive in that they
have heavy pitting on their surface. These osteoderms likely afforded
Tarjadia a fair amount of protection from other
predators of the time
such as rauisuchians and other kinds of archosaurs, perhaps even the
ancestors of the dinosaurs.
Identified as a doswelliid, Tarjadia was related to Doswellia and Archeopelta. Like these, Tarjadia is thought to have possibly been predators of smaller animals.
- A distinctive new archosaur from the Middle Triassic (Los Chanares Formation) of Argentina, A. Arcucci & C. A. Mariscano - 1998.