PPT-Pterosaurs By, Yu,Y Pterosaurs was a member of an extinct group of flying reptiles.

Pterosaurs lived in the Mesozoic Era from about 251 million to 65 million years ago Their fossils have been found on every continent Quick facts about Pterosaurs Environment When Pterosaurs was alive. Threatened Amphibians of the World (G For each theory . Explain the mechanisms. State the evidence. Q7. If you get stuck use the . ipad. and web age below.. http://. en.wikipedia.org. /wiki/. Alvarez_hypothesis. Over view of classification. Jessica Brown. Miila. Hall. Cold-blooded. Tetrapods. , four appendages. Considered as the first animals on land with the ability to live and multiply on land (amniotic egg). Amniotic egg- . a shelled, water-like sac that enables reptiles to complete their life cycles on dry land.. Vocabulary. Scaly. : . covered in scales.. Extinct. : . (of a species, family, or other larger group) having no living members.. Flee. : . Run away from a place or situation of danger.. Elongated. : . Evolution of birds . Kingdom . Animalia. , Phylum . Chordata. , Class Aves. Where did they come from?. From the Mesozoic Era, a debate of how they originated. . Two Hypotheses exist:. . Thecodont. . de . las. Aves. Controversia sobre la evolución de las aves:. Genealogía evolutiva . Aparición de la habilidad del vuelo. Archaeopteryx . (“. ala antigua”) . Descripto. . en . 1861 . Babiera. de . las. Aves. Controversia sobre la evolución de las aves:. Genealogía evolutiva . Aparición de la habilidad del vuelo. Archaeopteryx . (“. ala antigua”) . Descripto. . en . 1861 . Babiera. BY ZOLLIE. Flying reptiles are called pterosaurs.. There were at least 130 species.. Quetzalcoatlus. and Pterodactyls are flying. . reptiles.. Queatzalcoatlus. were the largest flying reptiles. Its head was the size of a car.. Click Here!. Can any of you . name. these three reptiles?. Objective: Today we are going to learn how to describe three basic characteristics of reptiles. . Click to Check out REPTILES!. Menu. Crocodiles. Evolution of birds . Kingdom . Animalia. , Phylum . Chordata. , Class Aves. Where did they come from?. From the Mesozoic Era, a debate of how they originated. . Two Hypotheses exist:. . Thecodont. . Why is it important ?. Animals are important because :. If a specie dies the whole eco system will destroy. If a specie dies another specie could die too because there is a food chain. . What are killing animals . History of Reptiles. Reptiles arose from amphibians. Earliest fossils 359 . m.y.a. Small, four – legged vertebrates w/small teeth. Pangaea. Drier climate. Mass extinction during Paleozoic era. Diversified to fill niches left by extinct species. Chapter 26 Reptiles and Birds Reptiles Skin is smooth and dry, covered in scales Helps prevent the evaporation of water from its body. First vertebrates with adaptations that enabled them to survive on land only. Dr. . Shilly. Elizabeth David. Reptiles means . Creeping. Study . of reptiles . . Herpetology. • . Cold- blooded(poikilothermic. ). • . Exoskeleton of . epidermal . scales. , . scutes. . or bony .