Paleontologist: Jorn Hurum

Transcription

1 This website would like to remind you: Your browser (Safari 7) is out of date. Update your browser for more security, comfort and the best experience on this site. ProfileArticle Paleontologist: Jorn Hurum Real-world geography. Explore cool careers. For the complete profile with media resources, visit: By National Geographic Education Staff Monday, August 29, 2011 Jorn is a 2011 National Geographic Emerging Explorer. He is a paleontologist who studies fossils found in Norway s Svalbard archipelago, north of the Arctic Circle. Jorn also studies Ida, an important fossil of an early primate. Jorn named the fossil after his daughter. EARLY WORK Jorn knew he wanted to be a paleontologist since he was 5 years old. I m one of the nerds, he says. Jorn s interest in paleontology was sparked when he realized fossils were not just rocks, but could tell the history of life on this planet. He imagined fossils saying, I am not a rock. I am a fossil. I have a story to tell. By the time Jorn was 6, he had his own collection of fossils and even his own museum in his room! All the visitors who came to our home had to be escorted through and have a proper showing of the exhibits, he remembers. Jorn s interest in paleontology never wavered. He earned his PhD in paleontology from the University of Oslo, Norway, and is still affiliated with the university s Natural History Museum. 1 of 7

2 MOST EXCITING PART OF YOUR WORK Discovery when you find something new. It s like one of those scratch-off lottery tickets every time you dig. Sometimes, you start digging and you might just find part of a skull or other bone. Sometimes, you find the skull and the vertebra... then you know it s a jackpot! MOST DEMANDING PART OF YOUR WORK Logistics, Jorn says. His team prepares for months before going to Svalbard every summer. We have between 15 and 20 people, tons of equipment food, jackhammers, water.... There s a lot of work before you start the cool thing. HOW DO YOU DEFINE GEOGRAPHY? Geography includes a variety of skills, Jorn says. You need to read maps, know geology, GPS, and the way landscape changes.... It s useful to find marine reptiles! GEO-CONNECTION Jorn, who describes himself as a fossil nerd, has found a wide variety of fossils all over the world. He has studied dinosaurs, mammals, and marine reptiles. His career has taken him on digs in the United States, Mongolia, Argentina, China, Canada, Kyrgyzstan, and Australia. In Svalbard, his team mostly finds marine reptiles, such as ichthyosaurs and plesiosaurs. One of the plesiosaurs found by Jorn and his team is nicknamed Predator X. Predator X was about 15 meters (49 feet) long, and had a bite that may have been more powerful than a Tyrannosaurus rex. Predator X was a fairly complete fossil, something Jorn admits he doesn t find all the time. Sometimes, we find explodasaurus, he says. They find a skull fossil in one place, a vertebra in another, and a flipper somewhere else. We have to 2 of 7

3 identify the entire animal from individual pieces. The black shale of Svalbard makes lighter-colored fossils stand out, and the hilly terrain is an excellent site for paleontologists to dig. We can actually see evolution over 5 million years, Jorn says. The top of the hill used to be a seabed about 100 meters (328 feet) deep. As tectonic activity kept pushing the shallow seabed (and its fossilized reptiles) above the water, new marine reptiles became fossilized in the newer seabed. As a result, You can walk from the fossil of a plesiosaur to its related ancestor, which existed millions of years earlier, just up the hill. The dig season in Svalbard is very short from July to August. During that time, the permafrost recedes about 80 centimeters (31.5 inches), and the paleontologists do not have to use jackhammers to penetrate the ground. There is also less wind, and the midnight sun makes it easy for the scientists to have long, productive days. Unlike paleontologists working in more temperate climates, Jorn and his team do not use remote sensing technology in their search for ancient sea monsters. The remote sensing technology doesn t work in the Arctic, he explains. The permafrost reflects too much light. One of the most important fossils Jorn has studied is one that he didn t find himself. Jorn bought a fossil Darwinius masillae, which he nicknamed Ida, from a private collector in Germany. Ida is about 47 million years old, and related to both monkeys and lemurs. Ida is the most complete [remains of a] primate before humans started to bury their dead, Jorn says. Ida is also an excellent public outreach tool for girls, he says. She is a cute, small monkey. She tells us so many stories she hurt her wrist, she is missing some teeth. For outreach to boys, Jorn relies on the predators he excavates in the Arctic. I know I need big teeth and blood! 3 of 7

4 SO, YOU WANT TO BE A... PALEONTOLOGIST Go for it! It s an interesting, exciting field of study. Jorn recommends studying all aspects of paleontology and not just focusing on one species or type of fossil. GET INVOLVED Jorn encourages families to visit a museum or listen to a scientist give a hands-on presentation. Paleontologists are usually excited to share their work with students. Kids little kids often have better questions and insights than adults! Vocabulary Term Part of Speech Definition affiliate verb to associate or connect to something else. ancestor organism from whom one is descended. ancient adjectivevery old. archipelago a group of closely scattered islands in a large body of water. Arctic region at Earth's extreme north, encompassed by the Arctic Circle. Arctic Circle paralell of latitude that runs 66.5 degrees north of the Equator. climate all weather conditions for a given location over a period of time. dig season time of the year when an archaeological or paleontological site can be legally and safely excavated. dinosaur very large, extinct reptile chiefly from the Mesozoic Era, 251 million to 65 million years ago. an adventurer, scientist, innovator, or storyteller Emerging recognized by National Geographic for their visionary work Explorer while still early in their careers. equipment tools and materials to perform a task or function. 4 of 7

5 Term Part of Speech Definition escort verb to accompany or guide. evolution change in heritable traits of a population over time. excavate verb to expose by digging. exhibit display, often in a museum. flipper large, flat limb used by marine mammals for swimming. geography study of places and the relationships between people and their environments. geology study of the physical history of the Earth, its composition, its structure, and the processes that form and change it. Global system of satellites and receiving devices used to Positioning determine the location of something on Earth. System (GPS) hill land that rises above its surroundings and has a rounded summit, usually less than 300 meters (1,000 feet). ichthyosaur giant marine reptile that flourished between 245 million years ago and 90 million years ago. jackhammer powerful drill, operated by a single person, that uses compressed air to break up hard substances like rock or pavement. landscape the geographic features of a region. lemur type of small mammal (primate). logistics management of the movement of goods and services. mammal animal with hair that gives birth to live offspring. Female mammals produce milk to feed their offspring. map symbolic representation of selected characteristics of a place, usually drawn on a flat surface. an animal that breathes air and usually has scales, and marine reptile lives most of its life in or around the ocean. midnight sun monkey museum sunlight visible all night at certain times of the year in Arctic and Antarctic regions. mammal considered to be highly intelligent, with four limbs and, usually, a tail. space where valuable works of art, history, or science are kept for public view. 5 of 7

6 Term Part of Speech Definition paleontologist person who studies fossils and life from early geologic periods. penetrate verb to push through. permafrost permanently frozen layer of the Earth's surface. PhD (doctor of philosophy) highest degree offered by most graduate schools. planet large, spherical celestial body that regularly rotates around a star. plesiosaur giant aquatic (mostly marine) reptile that flourished between 230 million years ago and 65 million years ago. predator animal that hunts other animals for food. primate type of mammal, including humans, apes, and monkeys. public program by an organization to connect its work to other outreach organizations or the general public. recede verb to retreat or withdraw. remote methods of information-gathering about the Earth's sensing surface from a distance. seabed the floor of the ocean. shale type of sedimentary rock. technology the science of using tools and complex machines to make human life easier or more profitable. tectonic movement of tectonic plates resulting in geologic activity activity such as volcanic eruptions and earthquakes. temperate adjectivemoderate. terrain topographic features of an area. ton unit of weight that equals 2,000 pounds. T. rex (Tyrannosaurus rex) large carnivorous or scavenger dinosaur. vertebrae plural (singular: vertebra) bones that make up the spinal column, or backbone, of an animal. waver verb to hesitate between two or more choices. Audio & Video National Geographic Channel: Death of a Sea Monster 6 of 7

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