Jurassic period
Jurassic
Triassic
Triassic period
Permian
Permian period
Carboniferous
coelophysis
Carboniferous period
suborder Ceratosaura
hylaeosaurus
Ictodosauria
Prosauropoda
suborder Prosauropoda
Quaternary period
Ectasian
order Ictodosauria
Quaternary
Age of Man
genus Coelophysis
Statherian
Calymmian
Cretaceous
Cretaceous period
Hettangian
genus Ceratosaurus
dinosaur
Stenian
pre-Jurassic
Cenozoic
New Stone Age
Upper Carboniferous
Triassic-Jurassic extinction event
Pennsylvanian period
Upper Carboniferous period
Age of Mammals
Cenozoic era
Pennsylvanian
Siderian
Cryogenian
Mesozoic
finicretaceous
suborder Pachycephalosaurus
Tertiary
Bajocian
Kimmeridgian
Sinemurian
Callovian
Rhyacian
Bathonian
Toarcian
Tertiary period
paleoconnection
Pliensbachian
horned dinosaur
ceratopsian
genus Barosaurus
Tonian
paleochronology
dinosauric
paleosource
rhynchosaur
Orosirian
Paleogenic
Aegyptopithecus
suborder Sauropoda
Age of Reptiles
Sauropoda
Mesozoic era
titanosauriform
Mesolithic Age
C15
Lower Carboniferous period
Theropoda
suborder Theropoda
Lower Carboniferous
Missippian period
Mississippian
neornithischian
palaeobiocoenosis
Mesolithic
Paleogene
Epipaleolithic
C16
Paleozoic era
Phanerozoic eon
Paleozoic
Phanerozoic
Phanerozoic aeon
palaeoichnologic
genus Brontosaurus
Gideon Algernon Mantell
Neoarchean
genus Apatosaurus
neotheropod
trachodon
trachodont