neornithine
protofeather
genus Archeopteryx
genus Archaeopteryx
genus Anatotitan
genus Corythosaurus
immature
starling
unfledged
paleornithology
palaeornithology
Euronithopoda
subclass Archaeornithes
Ornithopoda
tail feather
pterylography
Archaeornithes
euronithopod
ornithomimosaurian
suborder Ornithopoda
suborder Euronithopoda
maiasaur
suborder Ceratopsia
Ceratopsia
genus Protoavis
teleoptile
spadona
pterography
bird family
dinosauric
family Hadrosauridae
Hadrosauridae
paleopulmonic
Archaeopteryx lithographica
archeopteryx
archaeopteryx
precoces
uropygium
genus Ceratosaurus
prebasic
Lagopus
genus Lagopus
alternate plumage
protoavis
beard
order Ornithischia
maniraptoriform
fledgling
Ornithischia
fledgeling