Well, there was some question over whether or not Troodon was an ornithopod at one point. But what we now think of as "troodontids" were fairly well known, and known to be theropods. Saurornithoides, Stenonychosaurus, etc. It's just that they were called Saurornithoidids back then until Currie synonymized Stenonychosaurus with Troodon.
> On Aug 12, 2017, at 1:50 AM, Tim Williams <email@example.com> wrote:
> Thus, Saurornithoididae should have
> preference over Troodontidae. It's also worth remembering that the
> current usage of Troodontidae only goes back to 1987. Before that,
> there were differing opinions over whether troodontids were theropods
> or ornithopods.
Thomas R. Holtz, Jr.
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