Elmer Riggs
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Elmer Samuel Riggs (January 23, 1869 – March 25, 1963) was an American
paleontologist Paleontology (), also spelled palaeontology or palæontology, is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene epoch (roughly 11,700 years before present). It includes the study of fossi ...
known for his work with the Field Museum of Natural History in
Chicago (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name ...
,
Illinois Illinois ( ) is a state in the Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolitan areas include, Peoria and Rockf ...
.


Biography

He was born in
Trafalgar Trafalgar most often refers to: * Battle of Trafalgar (1805), fought near Cape Trafalgar, Spain * Trafalgar Square, a public space and tourist attraction in London, England It may also refer to: Music * ''Trafalgar'' (album), by the Bee Gees Pl ...
,
Indiana Indiana () is a U.S. state in the Midwestern United States. It is the 38th-largest by area and the 17th-most populous of the 50 States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th s ...
, and moved with his family to
Kansas Kansas () is a state in the Midwestern United States. Its capital is Topeka, and its largest city is Wichita. Kansas is a landlocked state bordered by Nebraska to the north; Missouri to the east; Oklahoma to the south; and Colorado to th ...
at a young age. He received bachelor's and master's degrees from the
University of Kansas The University of Kansas (KU) is a public research university with its main campus in Lawrence, Kansas, United States, and several satellite campuses, research and educational centers, medical centers, and classes across the state of Kansas. T ...
and then worked with the American Museum of Natural History. In May 1898 he joined the staff of the Field Museum (then the Field Columbian Museum) as that museum's first paleontologist. Though he was a specialist in fossil mammals, the Field Museum hired him in part to secure dinosaurs for exhibit. In the summer of 1898 he began with a field season in the Oligocene White River beds of South Dakota and Nebraska working under his department chairman, Oliver Farrington, a meteoriticist. Riggs demonstrated a clear facility for fieldwork and was given the opportunity to lead his own expeditions. He conducted his first Field Museum expedition in 1899 working in the Morrison Formation rocks of
Wyoming Wyoming () is a state in the Mountain West subregion of the Western United States. It is bordered by Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the southwest, and Colorado to the s ...
and
Colorado Colorado (, other variants) is a state in the Mountain states, Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the wes ...
and it was during this expedition that he discovered the first known specimen of ''
Torvosaurus tanneri ''Torvosaurus'' () is a genus of carnivorous megalosaurid theropod dinosaur that lived approximately 165 to 148 million years ago during the late Middle and Late Jurassic period (Callovian to Tithonian stages) in what is now Colorado, Portugal ...
''.Hanson, Michael; Makovicky, Peter J. “A new specimen of ''Torvosaurus tanneri'' originally collected by Elmer Riggs”. ''Historical Biology, volume 26, issue 6 (2014).'' Pages 775-784. https://www.tandfonline.com/doi/abs/10.1080/08912963.2013.853056?scroll=top&needAccess=true&journalCode=ghbi20. After corresponding with an MD during the winter of 1899/1900 he headed to the Morrison Formation in Western Colorado during the summer of 1900. On July 4, 1900 Riggs' assistant, H. William Menke, found the first known skeleton of the giant sauropod
dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is t ...
'' Brachiosaurus altithorax'' from near Grand Junction, Colorado. At the end of the 1900 field season Riggs' found a specimen of ''Apatosaurus'' near Fruita, a few miles from the Brachiosaurus site. This specimen was excavated during the 1901 field season, and was put on display in 1908 at the Field Museum. From these specimens he named ''Brachiosaurus'' and
Brachiosauridae The Brachiosauridae ("arm lizards", from Greek ''brachion'' (βραχίων) = "arm" and ''sauros'' = "lizard") are a family or clade of herbivorous, quadrupedal sauropod dinosaurs. Brachiosaurids had long necks that enabled them to access the ...
, and presented evidence that ''
Apatosaurus ''Apatosaurus'' (; meaning "deceptive lizard") is a genus of herbivorous sauropod dinosaur that lived in North America during the Late Jurassic period. Othniel Charles Marsh described and named the first-known species, ''A. ajax'', in 1877, ...
'' and ''
Brontosaurus ''Brontosaurus'' (; meaning "thunder lizard" from Greek , "thunder" and , "lizard") is a genus of gigantic quadruped sauropod dinosaurs. Although the type species, ''B. excelsus'', had long been considered a species of the closely related ' ...
'' were the same genus of dinosaur. He also proposed that sauropods were terrestrial animals, based on their limb structure, but this was largely dismissed in favor of aquatic sauropods until the 1970s, when the idea was revived by
Robert Bakker Robert Thomas Bakker (born March 24, 1945) is an American paleontologist who helped reshape modern theories about dinosaurs, particularly by adding support to the theory that some dinosaurs were endothermic (warm-blooded). Along with his mentor ...
. A “little carnivorous dinosaur” fossil that he brought back from Alberta, Canada, in 1922 was determined after field jackets were removed in 1999, to be
Gorgosaurus ''Gorgosaurus'' ( ; ) is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period (Campanian), between about 76.6 and 75.1 million years ago. Fossil remains have been found in the Ca ...
, a
tyrannosaurid Tyrannosauridae (or tyrannosaurids, meaning "tyrant lizards") is a family of coelurosaurian theropod dinosaurs that comprises two subfamilies containing up to thirteen genera, including the eponymous ''Tyrannosaurus''. The exact number of genera ...
. Following these discoveries, he returned to fossil mammals, and worked throughout the western
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
and
South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the sout ...
until 1931. His collection of Argentinian and Bolivian fossil mammals secured on two multi-year expeditions to South America (
Captain Marshall Field Expeditions The Captain Marshall Field Expeditions were undertaken by the Field Museum of Natural History in Chicago, Illinois. The two Captain Marshall Field paleontological expeditions had the goal of finding South American Cenozoic mammals. The mammals ...
) are his greatest legacy, and are still studied intensively. One particularly notable find was the saber-toothed
marsupial Marsupials are any members of the mammalian infraclass Marsupialia. All extant marsupials are endemic to Australasia, Wallacea and the Americas. A distinctive characteristic common to most of these species is that the young are carried in a ...
''
Thylacosmilus ''Thylacosmilus'' is an extinct genus of saber-toothed metatherian mammals that inhabited South America from the Late Miocene to Pliocene epochs. Though ''Thylacosmilus'' looks similar to the " saber-toothed cats", it was not a felid, like the ...
'', which he found in Late Miocene-age rocks of
Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...
in 1927 and named in 1933. He became the Curator of Paleontology at the Field Museum, and was employed by the museum until he retired in 1942. He was also sought after as a lecturer, and was still conducting speaking tours many years after retiring from the Field Museum. He died on March 25, 1963, in Sedan, Kansas, at the age of 94.


Notes


References

{{DEFAULTSORT:Riggs, Elmer S. American paleontologists American taxonomists 01 1869 births 1963 deaths People associated with the American Museum of Natural History People associated with the Field Museum of Natural History People from Johnson County, Indiana People from Sedan, Kansas Scientists from Illinois 19th-century American zoologists 20th-century American zoologists