Amazing dinosaurs

 Kronosaurus is a genus of pliosaurs from the Early Cretaceous period and it was a large plesiosaur at 33 ft in length. 2 of the most complete Kronosaurus specimens are now assigned to Eiectus and Monquirosaurus. It ate marine creatures that it lived with. It had a 6-foot-long head.

 Argentinosaurus is a genus of giant sauropod dinosaurs that lived in the Late Cretaceous in Argentina. It was a titanosaur, a clade with some of the largest dinosaurs ever though it is hard to tell due to fragmentary remains.  It was the largest dinosaur in its area and it is only surpassed in size by Patagotitan,  Alamosaurus, Puertasaurus, Bruhathkayosaurus, and Maraapunisaurus.  It probably swallowed gastroliths to digest its food. It could rear up on 2 legs to look way bigger than it is to scare off predators at the same place and time as it such as Giganotosaurus and Mapusaurus. The newborn Argentinosaurs are estimated at only 3 ft long while an adult could grow to 114 ft and 81 tons. They lived with the rebbachisaurids like Choconsaurus, Limaysaurus, and Cathartesaura, theropods such as Mapusaurus, Skorpiovenator, Giganotosaurus, Tralkasaurus, Huinculsaurus, Overoraptor, Aoniraptor, and Gualicho.

 Irritator is a genus of spinosaurids that lived in the Early Cretaceous of Brazil about 110-109 million years ago. It could grow up to 26 ft and 1 ton. It lived with the turtle Santanachelys.

Coloborhynchus is a genus of ornithocheirid pterosaur that lived 112-98 million years ago. It lived in Brazil and Texas depending on what species it is. It is known only from a part of the upper jaw. Like the Anhanguera and Uktenodactylus even though the Anhanguera had a spoon-shaped rosette crest on its jaws, the ones of Colobhorynchus were more box-shaped robust like the ones of Siroccopteryx which may be a junior synonym of it.  It was the second largest ornithocheirid after Tropeognathus. It had a 26-inch skull which indicates that it was 23 ft in wingspan.

 Nundasuchus is an extinct genus of suchian archosaur known from Tanzania. It lived 240 million years ago. The Nundasuchus could grow up to 9 ft. Its legs were situated under its back and it had armoured plates on its back suggesting a connection to Theropod dinosaurs.

Alanqa is a pterodactyloid pterosaur from Morocco. The name Alanqa comes from the Arabic word  العنقاء  which means al-anqa which is a mythical bird in Arabian culture. Alanqa is known from only 5 jaw fragments. The jaws are pointed like Quetzalcoatlus making it an azhdarchid. The jaw fragment sizes indicate that it has a wingspan of 13 ft. However, vertebrae assigned to the Alanqa indicate that it was 20 ft in wingspan. It lived in the Kem Kem formation living alongside the Paralititan (a sauropod) and the theropods Spinosaurus, Carcharodontosaurus, and Sauroniops and the crocodile Aegisuchus.

Tropeognathus is a genus of giant pterosaurs in the family ornithocheiridae, a group of pterosaurs known for having keel-tipped snouts. The tropeognathus is closely related to the Anhanguera. There are 2 species: Tropeognathus mesembrinus and Tropeognathus robustus. Fun facts:  The tropeognathus had a ridge-like crest on its beak that it may have used as a yacht to catch fish from the surface and the size of the crest may have been a way to determine which gender it was. It lived in Brazil about 122-111 million years ago.  It had a wingspan up to 27 ft and weighed 45 pounds. 

 It is not only dinosaurs