genus Protoavis
Archaeornithes
subclass Archaeornithes
genus Ibero-mesornis
Archaeopteryx lithographica
archaeopteryx
archeopteryx
Paleocene
paleornithology
Paleocene epoch
protoavis
palaeornithology
genus Archaeornis
archaeopterygid
genus Archeopteryx
genus Archaeopteryx
Struthioniformes
order Struthioniformes
paleoecology
semionotiform
order Gaviiformes
Gaviiformes
paleocytology
Eurypterida
order Eurypterida
archaeocete
archaeomaenid
Meleagrididae
starling
patagornithine
family Meleagrididae
Gyps
genus Gyps
crossognathiform
prophaethontid
crocodilian
ctenacanthiform
crocodilian reptile
polydolopimorphian
little egret
laughing owl
laughing jackass
Egretta garzetta
petalodontiform
Sceloglaux albifacies
argyrolagid
Dinornithiformes
order Dinornithiformes
zoophytolith
polybranchiaspiform