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Re: ptero-"oxpeckers"??

>       Has anyone ever suggested the possibility of an oxpecker-like
> pterosaur, eating insects off the backs of dinosaurs?

There are many illustrations showing this.

>       I can easily imagine that dinosaurs would have welcomed
> birds cleaning their skin of parasites, but I wonder if an insectivorous
> pterosaur might have ever evolved to fill a similar niche.  Wouldn't
> procumbent teeth work well for feeding on skin parasites?

Surely not improbable. Direct evidence is of course 0, but I can't imagine
fossilizable evidence of such behavior, and absence of evidence is no
evidence of absence!