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VELAFRONS

a plant-eating lambeosaurine hadrosaurid dinosaur from the Late Cretaceous of Mexico.
velafrons.png
Pronunciation: VEE-luh-FRONZ
Meaning: Sailed forehead
Author/s: Gates, et al. (2007)
Synonyms: None known
First Discovery: Coahuila, Mexico
Chart Position: 509

Velafrons coahuilensis

(Sailed forehead from Coahuila)Etymology
Velafrons is derived from the Spanish "vela" (sailed) and the Latin "frons" (forehead), in reference to its distinctive headcrest. The species epithet, coahuilensis, is derived from "Coahuila" (for the Mexican state where the specimen was found) and the Latin "ensis" (from).
Discovery
The first remains of Velafrons were discovered at 7a Quarry in the Cerro del Pueblo Formation (Difunta Group) near Rincon Colorado, about 27 miles west Saltillo City, Coahuila State, Mexico, by Martha Carolina Aguillón in the early 1990s. The same area yielded ornithomimosaur fossils a few years earlier that Aguillón named "Saltillomimus rapidus"—albeit unofficially—in her 2010 thesis. An official description is still lacking. The holotype (CPC-59, housed at the Museo del Desierto) is a partial subadult skull and partial postcrania.
Velafrons may be responsible for the three-toed hadrosaur footprints at three tracksites within Coahuila's Late Cretaceous Cerro Del Pueblo Formation, known as Las Aguilas, Hadrosaurio borracho and La Parrita.
Las Aguilas. Far outnumbered by theropod tracks (which is bizarre bearing in mind the area has yielded only scant theropod body fossils), hadrosaur tracks include those made by juveniles around 1.80 meters in length, as well as quadrupedal trackways suggesting a sub-adult some 7 meters in length, and bipedal trackways of an adult almost 2 meters longer.
Hadrosaurio borracho ("the drunk hadrosaur"). Mingled with those of birds, these hadrosaur tracks show long impressions of digit III as the owner dragged its feet, and "hand" prints that were layed down in a much wider gait than the foot prints. The latter suggests a wider area of movement for the hadrosaurian forelimb than previously thought, or, as the site name suggests, the hadrosaur that made them was simply drunk!
La Parrita. Found mingled with a possible titanosaur trackway, the La Parrita site boasts prints some 70.5 cm in length and 51 cm in width, suggesting an individual in excess of 12 meters long and 2.82 meters high at the hip.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Campanian
Age range: 80-72 mya
Stats:
Est. max. length: 8 meters
Est. max. hip height: 3 meters
Est. max. weight: 2 tons
Diet: Herbivore
References
• Eberth DA, Sampson SD, Rodríguez-de la Rosa RA, Aguillón-Martinez MC, Brinkman DB and López-Espinoza J (2003) "Las Águilas: an unusually rich Campanian-age vertebrate locale in southern Coahuila, Mexico". Journal of Vertebrate Paleontology, 23 (Suppl. To No. 3): 47A.
• Rodríguez-de la Rosa RA, Eberth DA, Sampson SD, Brinkman DB and López-Espinoza J (2003) "Dinosaur tracks from the Late Campanian Las Aguilas locality, southeastern Coahuila, Mexico". Journal of Vertebrate Paleontology, 23 (Suppl. To No. 3): 90A.
• Rodríguez-de la Rosa RA (2007) "Hadrosaurian footprints from the Late Cretaceous Cerro del Pueblo Formation of Coahuila, Mexico". 4th European Meeting on the Palaeontology and Stratigraphy of Latin America Cuadernos del Museo Geominero, no 8. Instituto Geológico y Minero de España, Madrid.
• Gates TA, Sampson SD, Delgado de Jesús CR, Zanno LE, Eberth D, Hernandez-Rivera R, Aguillón Martínez MC, Kirkland JI (2007) "Velafrons coahuilensis, a new lambeosaurine hadrosaurid (Dinosauria: Ornithopoda) from the Late Campanian Cerro del Pueblo Formation, Coahuila, Mexico". Journal of Vertebrate Paleontology 27(4):917–930.
• Horner JR, Weishampel DB and Forster CA (2004) "Hadrosauridae" in "The Dinosauria: Second edition".
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To cite this page:
Atkinson, L. "VELAFRONS :: from DinoChecker's dinosaur archive".
›. Web access: 25th Jun 2017.
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