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