The Early Cretaceous (timestratigraphic name) or the Lower Cretaceous (logstratigraphic name), is the earlier of the two major divisions of the Cretaceous Period. The Cretaceous (kriːˈteɪʃəs, usually abbreviated 'K' for its German translation "Kreide" is a geologic period and system, reaching from the end of It began about 146 million years ago. Annum is one form of the Latin noun meaning Year, not a form normally used for derivatives in modern languages the accusative singular
During this time many new types of dinosaurs appeared or came into prominence, including psittacosaurs, spinosaurs and coelurosaurs, while other survivors from the Late Jurassic continued. Psittacosaurus ( or, from the Greek for ' Parrot Lizard ' is a Genus of Psittacosaurid Ceratopsian Spinosauridae is a family of unusual Theropod Dinosaurs Members of this group were large Bipedal Predators with elongated Crocodile For the prehistoric gliding reptile see Coelurosauravus. Coelurosauria (sɨˌljʊərəˈsɔriə is defined as the clade containing all Theropod The Late Jurassic (or Malm) Epoch of the Jurassic Period is the unit of geologic time from 161
In the seas, the ichthyosaurs declined and eventually died out at the start of the Late Cretaceous. Ichthyosaurs ( Greek for 'fish lizard' - ιχθυς / ichthyos meaning 'fish' and σαυρος / sauros meaning 'lizard' were giant Late Cretaceous (100mya - 65mya refers to the second half of the Cretaceous Period, named after the famous white Chalk cliffs of southern England Neognathous birds and angiosperms, appear for the first time. The Neognathia birds Aves whose palatal mobility has been increased via the following modifications (Feduccia 1980 1996 Loss of the Basipterygoid Birds ( class Aves) are bipedal endothermic ( Warm-blooded) Vertebrate animals that lay eggs. The flowering plants or angiosperms ( Angiospermae or Magnoliophyta) are the most widespread group
| Cretaceous period | |
|---|---|
| Lower/Early Cretaceous | Upper/Late Cretaceous |
| Berriasian | Valanginian | Hauterivian Barremian | Aptian | Albian |
Cenomanian | Turonian | Coniacian Santonian | Campanian | Maastrichtian |