Evidence of gregariousness in Rebbachisaurids (Dinosauria, Sauropoda, Diplodocoidea)
Publicado por Leonardo Filippi en 14:12
Leonardo Salgado José I. Canudo, Alberto C. Garrido and José L.
Carballido
Abstract. For
the first time an association of adult and juvenile rebbachisaurid sauropods is
described. The material comes from the Early Cretaceous locality of Agrio
del Medio (Neuquén, Argentina). The three specimens apparently formed a single
group, and their death seems to have been almost simultaneous. The two juvenile
specimens are represented by axial and appendicular bones. They show a close
relationship with Zapalasaurus bonapartei, which comes from a different
sector of the same basin, but which is approximately the same age. The
discovery at Agrio del Medio suggests that rebbachisaurid sauropods displayed
gregarious behavior. The paleoenvironments in which rebbachisaurids are
normally recorded implies a greater tolerance toward extremely arid
environments than that shown by macronarian sauropods.
Salgado, L., Canudo, J. I., Garrido, A. C. and Carballido, J. L. 2012.
Evidence of gregariousness
in Rebbachisaurids (Dinosauria, Sauropoda, Diplodocoidea) from the Early
Cretaceous of Neuquè (Rayoso Formation),
Patagonia, Argentina. Journal of Vertebrate Paleontology 32(3):603–613.
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