Assertion: ostrich's family | /r/IsA | a group of megalosaurs
Facets:
value: originally
type: MANNER
Source sentences:
text: Named by O.C. Marsh in 1890, the family Ornithomimidae was originally classified as a group of "megalosaurs" (a "wastebasket taxon" containing any medium to large sized theropod dinosaurs), but as more theropod diversity was uncovered, their true relationships to other theropods started to resolve, and they were moved to the Coelurosauria.