Eubrontes

The footprints were first described by Edward Hitchcock, a professor of Amherst College, who thought they were made by a large bird. He originally assigned them to ichnotaxon Ornithichnites in 1836, then Ornithoidichnites in 1841, before coining Eubrontes in 1845. The name means "true thunder," probably referring to the supposed weight of the animal impacting on the ground.

in 1858 Hitchcock still described the tracks as those of "a thick-toed bird," since there was no evidence of tail drag marks. But by the time that Richard Swann Lull began working on the tracks in 1904, they were thought to belong to a dinosaur. Lull originally thought they were from a herbivore, but by 1953 he concluded they were from a carnivorous theropod. Many later authors have agreed with this interpretation, but some have suggested that they are from a prosauropod. Regardless, they are almost certainly saurischian.Robert E. Weems. 2003. "Plateosaurus foot structure suggests a single trackmaker for Eubrontes and Gigandipus footprints." In P. M. LeTourneau & P. E. Olsen (eds.). The Great Rift Valleys of Pangea in Eastern North America, Volume 2: Sedimentology, Stratigraphy, and Paleontology. New York: Columbia University Press, pp. 294–295.

A typical Eubrontes print is from 25–50 cm long, with three toes that terminate in sharp claws. It belongs to a biped that must have been over one metre high at the hip and from 5–6 metres long. In the 1960s Edwin Colbert and others supposed that a large heavy carnivore like Teratosaurus (then considered to be a dinosaur) made the track, but a possible candidate is Dilophosaurus, a large theropod related to Coelophysis, or a close relative such as Podokesaurus. However no Dilophosaurus fossil material is associated with Eubrontes tracks. The tracks may also be from a plateosaurid. In 2016 Molina-Perez and Larramendi based on the 45 cm (1.48 ft) long footprint estimated the size of the animal at 8.4 meters (27.5 ft) and 600 kg (1.323 lbs).{{Cite book|last=Molina-Perez & Larramendi|title=Récords y curiosidades de los dinosaurios Terópodos y otros dinosauromorfos|publisher=Larousse|year=2016|location=Spain|pages=95 & 120}} Another 60.5 cm (1.98 ft) long footprint belongs to an 8.1 meter (26.6 ft), 1.1 tonne (2.425 lbs) individual, that was very similar to Sinosaurus triassicus.

File:Dinosaur State Park (Rocky Hill, CT) - prints.JPG]]

Another major find occurred at Rocky Hill, Connecticut in 1966. Nearly 600 prints are preserved there in an area now designated Dinosaur State Park.

A trackway attributed to the ichnogenus Eubrontes had a missing second digit on the right foot. The animal could have either lost the toe due to injury or it was malformed.Molnar, R. E., 2001, Theropod paleopathology: a literature survey: In: Mesozoic Vertebrate Life, edited by Tanke, D. H., and Carpenter, K., Indiana University Press, p. 337-363.

File:Cast of Eubrontes Gigantis track by Paul Olsen.jpg

In early 1970s, a fiberglass cast of an Eubrontes giganteus footprint was made by Paul E. Olsen, then 14 years old, and his friend Tony Lessa. On June 29, 1972, it was sent by Olsen and Lessa to President Richard Nixon to get his support for registering the Riker Hill Fossil Site in Roseland, New Jersey as a National Natural Landmark.[http://blogs.ei.columbia.edu/blog/category/earth-sciences Foot Forward.] {{webarchive|url=https://web.archive.org/web/20090407075937/http://blogs.ei.columbia.edu/blog/category/earth-sciences/ |date=2009-04-07 }} State of The Planet Blogs of The Earth Institute at Columbia University. March 11, 2009 – accessed on March 27, 2009

In 1991, Eubrontes was named the state fossil of Connecticut.{{cite web|title=The State Fossil|url=http://www.ct.gov/ctportal/cwp/view.asp?a=885&q=246498}}

An ichnospecies of dinosaur footprint from the Early Cretaceous of Gulin County, Sichuan, China was discovered and named as Eubrontes nobitai. The epithet of scientific name commemorate Nobita Nobi, a fictional character in the Doraemon series, for the movies Doraemon: Nobita's Dinosaur and Doraemon: Nobita's New Dinosaur, which have inspired children's love for dinosaurs.{{Cite web |last=KYODO News |title=China dinosaur footprint fossil named after Doraemon's 'Nobita' |url=https://english.kyodonews.net/news/2021/07/c059d828f4ae-china-dinosaur-footprint-fossil-named-after-doraemons-nobita.html |access-date=2023-07-28 |website=Kyodo News+}}

• List of dinosaur ichnogenera

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• Connecticut River Valley trackways
• List of Australian and Antarctic dinosaurs
• Grallator
• Anomoepus
• Dilophosaurus
• Edward Hitchcock

{{Reflist}}

• Colbert, E., Dinosaurs, Hutchinson & Co, 1962
• {{cite web |archive-url=https://web.archive.org/web/20091027064247/http://www.geocities.com/stegob/eubrontesconnecticut.html |title=Dino Land State Fossils: Eubrontes of Connecticut |url=http://www.geocities.com/stegob/eubrontesconnecticut.html?200611 |archive-date=2009-10-27 }}
• Queensland Dinosaur Trackways home.alphalink.com.au/dannj/larkqury.htm

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Category:Theropod trace fossils

Category:Fossil trackways

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