The position of the continents about 120ma ago
Lower Cretaceous Pterosaurs
The Lower Cretaceous Period started about 136 million years ago when there was a dramatic change in the types of species of pterosaurs. Very few pterosaurs made the transition from the Jurassic to the Cretaceous and a distinct new range of larger pterosaurs evolves at this time. The main stages in the United Kingdom are as follows.
There are a vast number of specimens of pterosaur bone from the Cambridge Greensand, mainly of Ornithocheirid species. Some specimens are of very large pterosaurs, but they are fragmentary. The Cambridge Greensand is a derived sediment and it is likely that most of the pterosaur fossils come from a slightly earlier age. The Purbeck beds have also yielded some pterosaur remains.
There are a great number of pterosaurs worldwide attributed to this time from a number of very good sites. The Santana formation in Brazil, The sites in Xinjiang Province, China and Western Mongolia to name but three.
The position of the continents about 120ma ago
Anhangueridae
| Anhanguera santanae |
| Anhanguera blittersdorffi |
| Anhanguers winchii |
| Anhanguera sp |
| Anhanguera sp |
| Siroccopteryx moroccensis |
Azhdarchidae
Cearadactylidae
| Cearadactylus atrox |
Ctenochasmidae
| Beipioapterus chenianus |
| Liaoxipterus brachyognathus |
| Chiliean Ctenochasmid |
| Cathayopterus graboui |
| Elanodactylus prolatus |
| Gegepterus changi |
Dsungaripteridae
Istiodactylidae
| Istiodactylus latidens |
| Istiodactylus sinensis |
| Nurhachius ignaciobritoi |
| Longchengpterus zhaoi |
Ornithocheiridae
Pterodactylidae
| Haopterus gracilis |
| Mythunga camara |
Pterodaustridae
| Pterodaustro guinazui |
| Pterodaustro sp. |
| Pterodaustro sp. |
Tapejaridae
| Sinopterus dongi |
| Sinopterus sp. |
| Sinopterus gui |
| Tupandactylus imperator |
| Tupandactylus navigens |
| Tapejara wellnhofrei |
| Huaxiapterus jii |
| Huaxiapterus corollatus |
Unclassified Pterosaurs
| Arthurdactylus conan-doylei |
| Thalassodromeus sethi |
| Thalassodromeus oberli |
| Pterosaur sp. |
| Prejanopterus curvirostrum |
Ichnites
| Purbeckopus pentadactylus |
| Pteraichnus species |
| Pteraichnus cidacoi |
| Pteraichnus vetustior |
| Pteraichnus manueli |
| Pteraichnus parvus |
| Pteraichnus koreanensis |
| Pteraichnus nipponensis |