_:n7956952900b44af8813398344488c37cxb0
<http://schema.org/abstract>
"The Rhamphorhynchoidea forms one of the two suborders of pterosaurs and represent a grade of primitive members of this group of flying reptiles. This suborder is paraphyletic in relation to the Pterodactyloidea, which arose from within the Ramphorhynchoidea, not from a more distant common ancestor. Because it is not a completely natural grouping, Rhamphorhynchoidea is not used as a formal group in most scientific literature, though some pterosaur scientists continue to use it as an informal grou"
<https://fossil.fandom.com/wiki/Rhamphorhynchoidea>