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Re: Sauropod spines

In a message dated 95-09-18 23:35:18 EDT, RaptorRKC@aol.com writes:

>  Does this evidence hint that spines could have been on
>titanosaurs too?

"Spines," particularly dermal scutes, are well known in titanosaurids such as
_Saltasaurus_ and _Ampelosaurus_. These were probably homologous to the
spines recently found in other sauropods. Dermal armor is primitive for
Dinosauria and is well expressed in numerous phytodinosaurian groups,
including the Ankylosauria and Stegosauria, which are famous for it. It was
also present in Lesothosauria (primitive ornithischians of uncertain
relationships) and to some extent in Ornithopoda.