The most extensive, modern, tropical wetlands are found in the papyrus choked Nile drainage area in Sudan and Uganda. (walking dinosaur costume)Wetlands also appear further south in the Okovango flood plain at the edge of the Kalahari Desert. The mud flats support vegetation peculiarly adapted to the conditions. In these places the dominant plants arc water-loving grasses and reeds, which developed in the Tertiary period. In the Mesozoic, the water courses and mud banks supported thick beds of horsetails. Like grasses, horsetails spread by means of underground stems which held the sediments together, and provided a firm surface on which more permanent vegetation could grow. (animatronic dinosaur equipment)Like reeds, the horsetails could grow in shallow water. On stabilized sandbanks, thickets of ferns such as Weichselia grew. Stable ground developed and on it thrived thickets of conifers and cycads.
During the Cretaceous period, herds of Iguanodoti roamed the wetlands of northern Europe, grazing on horsetail beds. (animatronic dinosaur)Smaller herbivores, such as the fleet-footed Hypsilophodony also scampered there. In the more permanent thickets, armoured dinosaurs such as Polacattthus grazed. Where plant-eating animals flourished.
meat-eaters that preyed on them followed, and in the horsetail swamps of northern Europe they included Megalosaurus and Neovenator.
Wading in the waters were fish-eating theropods, such as Baryorryx.(animatronic dinosaur for sale)
Dinosaurs were not the only animals that existed here. In the water were crocodiles, including the dwarf form, Bernissartia, no bigger than a domestic cat, and turtles such as Chitracephalusy about the size of a dinner plate. In the skies there wheeled pterosaurs, such as the condor-sized Istiodactylus. Disarticulated bones of all these animals have been found in the swamp deposits laid down at that time.
The isolated fossil bones in these deposits may be worn and polished, showing that they were washed about for a while before settling, fhey arc sometimes encrusted with the eggs of water snails, suggesting that they lay on the stream bed for some time before becoming buried.