Cretaceous Early
Mesozoic
145.0–100.5 Mya
703 dinosaurs
The Cretaceous saw continued dinosaur evolution with the rise of ornithopods and early ceratopsians. Flowering plants first appeared and began to transform terrestrial ecosystems. Spinosaurus and other large theropods lived during this time.
Irenesauripus occidentalis
None
CarnivoreIrenichnites
None
CarnivoreIrritator
Spinosauridae
PiscivoreIrritator challengeri
None
CarnivoreIstiorachis macarthurae
None
HerbivoreIteravis
None
CarnivoreItsukisauropus izumiensis
None
CarnivoreIyuku raathi
None
HerbivoreJeholornis
None
CarnivoreJeholornis curvipes
None
CarnivoreJeholornis palmapenis
None
CarnivoreJeholornis prima
None
CarnivoreJeholosauridae
None
HerbivoreJeholosaurus
None
HerbivoreJeholosaurus shangyuanensis
None
HerbivoreJialingpus
None
CarnivoreJianchangornis microdonta
None
CarnivoreJianchangosaurus yixianensis
None
CarnivoreJianianhualong tengi
None
CarnivoreJibeinia luanhera
None
CarnivoreJindongornipes
None
CarnivoreJindongornipes kimi
None
CarnivoreJinfengopteryx elegans
None
CarnivoreJinguofortis perplexus
None
CarnivoreJintasaurus meniscus
None
HerbivoreJinyunpelta sinensis
None
HerbivoreJinzhousaurus yangi
None
HerbivoreJiuquanornis niui
None
CarnivoreJixiangornis orientalis
None
CarnivoreJuehuaornis zhangi
None
CarnivoreJunornis houi
None
CarnivoreJurabrontes
None
CarnivoreJurabrontes melphicticus
None
CarnivoreKalohipus bretunensis
None
CarnivoreKaririavis mater
None
CarnivoreKarongasaurus gittelmani
None
HerbivoreKelmayisaurus petrolicus
None
CarnivoreKhinganornis
None
CarnivoreKhinganornis hulunbuirensis
None
CarnivoreKinnareemimus khonkaenensis
None
HerbivoreKiyacursor longipes
None
CarnivoreKompsornis longicaudus
None
CarnivoreKoreaceratops hwaseongensis
None
HerbivoreKoreanaornis
None
CarnivoreKoreanaornis dodsoni
None
CarnivoreKoreanaornis hamanensis
None
CarnivoreKoreanornis sinensis
None
CarnivoreKoshisaurus katsuyama
None
Herbivore