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FRUITADENS

a tiny heterodontosairid ornithischian dinosaur from the Late Jurassic of North America.
Pronunciation: FRU-tah-denz
Meaning: Fruita tooth
Author/s: Butler, Galton et al. (2010)
Synonyms: None known
First Discovery: Fruita, Colorado
Chart Position: 597

Fruitadens haagarorum

(Haaga's Fruita tooth)Etymology
Fruitadens is derived from "Fruita" (for the City in Colorado where it was discovered) and the Latin "dens" (tooth). The species epithet, haagarorum, honors the Haaga family (Paul Haaga Jr, Heather Haaga, Blythe Haaga, Paul Haaga III and Catalina Haaga), for their support of the Natural History Museum of Los Angeles County.
Discovery
All known remains of Fruitadens were discovered in the Brushy Basin Member of the Morrison Formation, west of Fruita City, 19 km northwest of Grand Junction, Mesa County, Colorado, USA. The holotype (LACM 115747) was collected by J. M. Clark in August 1977, and includes incomplete upper and lower jaws, a number of vertebrae from the neck, back, hip and tail, both ends of both shins, and a partial right metatarsal, from "locality 4684". A partial right thigh was initially included too, but it actually belonged to a crocodylomorph called Macelognathus.
Referred specimens LACM 128258 (a partial upper jaw, lower jaw, back and tail vertebra from a juvenile), LACM 120602 (tail vertebra, left ankle and heel, and foot and toe bones) collected in June 1985, and LACM 128303 (poorly preserved left lower jaw with five teeth) collected in 1981, were also found at "Locality 4684" which, as it turns out, is a generic locality "tag" for FPA (Fruita Paleontological Area) specimens that can't be traced to a specific quarry. LACM 115727 (fragmentary vertebrae fom the neck, back and tail, a partial thigh, and a partial shin attached to an ankle) was found at locality 5576 ("George’s ‘Coelurosaur’ Site") in July/August 1979, while LACM 120478 (left upper arm, partial left thigh, and an articulated shin, shank, ankle and heel from a juvenile) was found at locality 5572 (the "Main Callison Quarry"), also in July/August 1979. All referred specimens were found by George Callison-led teams from the Natural History Museum of Los Angeles County.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Jurassic
Stage: Kimmeridgian
Age range: 156-151 mya
Stats:
Est. max. length: 0.8 meters
Est. max. hip height: ?
Est. max. weight: 0.8 Kg
Diet: Omnivore
Family Tree:
Dinosauria
Ornithischia
Heterodontosauridae
Fruitadens
haagarorum
References
• Galton PM (2007) "Teeth of ornithischian dinosaurs (mostly Ornithopoda) from the Morrison Formation (Upper Jurassic) of the western United States" in Carpenter K (ed.) "Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs".
• Foster J (2007) "Jurassic West: The Dinosaurs of the Morrison Formation and Their World".
• Butler RJ, Galton PM, Porro LB, Chiappe LM, Henderson DM and Erickson GM (2010) "Lower limits of ornithischian dinosaur body size inferred from a new Upper Jurassic heterodontosaurid from North America" (+supp.) Proc Biol Sci. 277(1680): 375-81.
• Butler RJ, Porro LB, Galton PM and Chiappe LM (2012) "Anatomy and Cranial Functional Morphology of the Small-Bodied Dinosaur Fruitadens haagarorum from the Upper Jurassic of the USA". PLoS ONE 7(4): e31556.
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To cite this page:
Atkinson, L. "FRUITADENS :: from DinoChecker's dinosaur archive".
›. Web access: 22nd Oct 2017.
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