Therefore only a few feathered dinosaur genera have been identified.
It is notable for being the most species-rich dinosaur genus.
This is the highest number of valid species currently assigned to any single dinosaur genus (not including birds).
In contrast, most other dinosaur genera are monospecific, containing only a single known species.
Therefore actual species diversity may be much higher than currently recognized in this and other dinosaur genera.
One study estimated that the live masses for many dinosaur genera had a four-fold range.
An earlier study predicted that about 3400 dinosaur genera existed, including many which would not have been preserved in the fossil record.
The relationships among these dinosaur genera are difficult to pick out.
In the 135 years between Buckland's first discovery and 1969 a total of 170 dinosaur genera were known.
It is known from a dozen individuals, though some referred material may belong to another related dinosaur genus.
