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  4. Be A Junior Ranger - Petrified Forest National Park (U.S. National Park Service)

Be A Junior Ranger. New junior rangers show off their certificates and badges! Petrified Forest Junior Ranger Booklet. Updated How do you become a Junior Ranger? We are always happy to add another name to our Junior Ranger team. We invite YOU to become a member of this very special group of people. When you take the time to learn about the park and its valuable resources, you will be able to share your knowledge with friends and family to help them understand why Petrified Forest National Park is a special place.

There are a lot of other junior ranger activity books in the National Parks! Check them out here!

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Paleontologist Book Become a Jr. Paleontologist Check out the Jr. Junior Rangers Explore, Learn and Protect! Historic Preservation Jr. Last updated: December 1, The lowest-priced brand-new, unused, unopened, undamaged item in its original packaging where packaging is applicable. Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag.

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Department of the Interior , Paperback Be the first to write a review. About this product. Stock photo. Brand new: lowest price The lowest-priced brand-new, unused, unopened, undamaged item in its original packaging where packaging is applicable. Although he believed that catastrophic events caused regional extinction, he also believed in fixed species as opposed to evolving species. Charles Robert Darwin February 12, April 19, was an English naturalist who revolutionized scientific thought with the theory of evolution and natural selection. After studying at Cambridge University, Darwin served as naturalist on the ship HMS Beagle captained by Robert Fitzroy during its five-year voyage around the world traveling west December 27, October 2, On this trip, Darwin studied a tremendous variety of plant and animal life.

This world-shaking book outlined the gradual change in a species from generation to generation through natural selection. Alfred Lord Wallace independently proposed the theory of evolution the same time as Darwin. In , Darwin published "The Descent of Man," which focused on the origins of people.

The theory of evolution has been debated since it was proposed, but most scientists accept evolution and natural selection as the method of species formation and the foundation of biology.

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For more information on Darwin, click here. He worked extensively with Dong Zhiming, and also worked with Li, Tang Zilu, Zhang, and Zhou Shiwu, who were co-namers of many of the above-listed dinosaurs. Douglass found many specimens tons of fossils! The fossilized bones were found by workmen in a Cretaceous marl a crumbly type of soil pit on the John E. Hopkins farm in Haddonfield, New Jersey beginning in Foulke heard of the discovery and recognized its importance in The dinosaur was excavated and named by US anatomist Joseph Leidy who named it Hadrosaurus foulkii meaning "Foulke's big lizard".

Peter M. Galton is a British paleontologist working in the USA. He named: Aliwalia , Blikanasaurus with J. Wall, , Lesothosaurus , Ornatotholus with H. Sues, , Othnielia, , Stygimoloch with H. Sues, , Torvosaurus with J. Jensen, , Valdosaurus , and Yaverlandia He named the dinosaur families: Blikanasauridae with J. He named the order Herrerasauria He also championed the cladistic theory that birds are modern-day dinosaurs with R.

Bakker, , showed that Hypsilophodon was not arboreal did not live in trees , that hadrosaurs did not drag their tails but used the tail as a counterbalance for the head, and that the Pachycephalosaurs butted heads like rams. Jacques A. He has worked extensively on the classification of dinosaurs, birds, and all saurians including lizards, crocodylians, and rhynchocephalians. In , J. Gauthier looked at over characteristics of birds and dinosaurs and showed that birds belonged to the clade of coelurosaurian dinosaurs. Charles Whitney Gilmore was a scientist who studied North American and Asian dinosaurs including those in the Gobi Desert , and fossil lizards.

He named Alamosaurus , Alectrosaurus , Archaeornithomimus , Bactrosaurus , Brachyceratops , Chirostenotes , Mongolosaurus , Parrosaurus , Pinacosaurus , Thescelosaurus , and the family Troodontidae Gilmoreosaurus Brett-Surman, was named to honor Gilmore. The first dinosaur models were made by Benjamin Waterhouse Hawkins of England in He made and sold plaster-cast dinosaurs through the Ward's catalogue of scientific supplies.

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The first dinosaur used for adult amusement was a life-size model of an Iguanodon made of concrete by Hawkins that was used to house a dinner party for scientists including Richard Owen , who coined the term dinosaur at a major exhibition in London, England, in The invitations to the party were sent on fake pterodactyl wings. In South Dakota in , Hendrickson found the remarkable T. This T. For more information on Hendrickson, click here.

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Edward B. Hitchcock was a US clergyman and geologist who found the first large dinosaur trackways in Connecticut, USA. Hitchcock collected over 20, dinosaur fossil footprints; he thought that the trackways had been made by huge, extinct birds and was essentially correct. This was soon after the discovery of radioactivity, and using radio-isotope dating, Holmes estimated that the Earth was about 4 billion years old - this was much greater than previously believed. Holtz, Jr. He was born in Los Angeles and spent his early childhood near Houston, Texas.

He was an undergraduate at the Johns Hopkins University, and received his Ph. Holtz's main research is on the evolution, anatomy, and ecology of theropod dinosaurs especially tyrannosaurids. James O. John R. Weishampel, Horner discovered the first egg clutches in the Americas Maiasaura and the first evidence of parental care from dinosaurs also Maiasaura. Horner attended the University of Montana, majoring in geology and zoology. Horner is the author of: "Digging Dinosaurs" Workman Pub. Thomas H.

Be A Junior Ranger - Petrified Forest National Park (U.S. National Park Service)

Huxley was a British scientist and friend of Charles Darwin. He was the first scientist to notice the similarity between birds and dinosaurs.

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  8. He named: Acanthopholis , the family Archaeopteryglidae , Euskelosaurus , Hypsilophodon , and the family Megalosauridae That expedition found many late Jurassic period dinosaurs, including some Brachiosaurus. Janensch named Dicraeosaurus and Elaphrosaurus James A. He named Cathetosaurus , Dystylosaurus , the family Torvosauridae , and Torvosaurus with P.

    Galton, James Ian Kirkland is an American geologist and paleontologist who has studied dinosaurs from the soutwestern USA for over 20 years, discovering many new and important genera. Lawrence Morris Lambe was a Canadian fossil hunter who named: Chasmosaurus , Edmontosaurus , Eoceratops , Euoplocephalus , Gorgosaurus , Gryposaurus , Panoplosaurus , Stegoceras , and Styracosaurus Lambeosaurus was named as a tribute to Lambe in Langston has named and described the dinosaurs Acrocanthosaurus Stovall and Langston, and Lophorhothon He received his Ph. Langston was the thesis advisor of Douglas Lawson when Lawson found the giant pterosaur Quetzalcoatlus.

    Lapparent named and described the dinosaurs Inosaurus tedreftensis Lapparent, and Lusitanosaurus liassicus Lapparent and Zbyszewski, He also found many new species of known genera, including: Apatosaurus alenquerensis Lapparent and Zbyszewski, , Astrodon pusillus Lapparent and Zbyszewski, , Brachiosaurus atalaiensis Lapparent and Zbyszewski, , Brachiosaurus nougaredi Lapparent, , Camarasaurus alenquerensis Lapparent and Zbyszewski, , Cetiosaurus mogrebiensis Lapparent, , Elaphrosaurus gautieri Lapparent, , Elaphrosaurus iguidiensis Lapparent, , Megalosaurus pombali Lapparent and Zbyszewski, , and Rebbachisaurus tamesnensis Lapparent, He also discovered the giant crocodile Sarcosuchus The dinosaur Lapparentosaurus Bonaparte, was named to honor Lapparent.

    He excavated the first American dinosaur, Hadrosaurus, in Leidy named Antrodemus , perhaps Allosaurus , Aublysodon , Deinodon , Diplotomodon , Hadrosaurus the first nearly-complete dinosaur skeleton and first-known duck-billed dinosaur , , Palaeoscincus , Thespesius , Trachodon , and Troodon Leidy was also the first scientist to identify many extinct species of camels, horses, sloths, tigers, and rhinoceroses.

    LULL, R. Richard Swann Lull was a vertebrate paleontologist who headed Yale's Peabody Museum Lull said that the best fossils collecting could be done in the basement of the Peabody Museum. He named the following: Anatosaurus Lull and Wright, an obsolete name for Edmontosaurus , Anchisauripus an ichnogenus of theropod dinosaur in , Diceratops Hatcher vide Lull, , and Proceratops Lull, Evgenii Aleksandrovich Maleev was a Russian paleontologist who named the dinosaur genera Talirurus , Tarbosaurus , and Therizinosaurus ; he also named the family Therizinosauridae. The dinosaurs Maleevosaurus Pickering, and Maleevus Tumanova, were named by to honor Maleev.

    Mantell was an amateur British fossil hunter, one of the first in the world.