So I was browsing through the Archaeopteryx lithographica records on FossilWorks; and in one of the three records (from Workerszell, Eichstätt), I notice the mention of an 'unclassified' reptile taxon "Rhacehosaurus gracilis". The only further information that was provided was the age range (150.8 to 145.5 Ma) and the geographical distribution. I looked elsewhere online (google scholar, ResearchGate...) for any other mention of the genus "Rhacehosaurus", and nothing else turns up. Do you people know about this enigmatic taxon? Is it some kind of invalid synonym or something?
I'd love to know more about this..