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Elasmarian Files #05: Notohypsilophodon comodorens

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Description

This one's pretty basic but probably my favorite appearance wise.

Pufftail
Notohypsilophodon comodorensis

Dimensions: Males and females are approximately the same size, measuring around 4ft long and weigh 15-20lbs.

Habitat/Location: River margins and sparsely forested plains of the Bajo Barreal Formation in southern Argentina, 95MYA

Diet: Ferns, seeds, fallen fruits, small animals, detritus

Habits: Pufftails are a common sight in Bajo Barreal, roaming in small groups of five to seven adult individuals, led by a male, with their young in tow. These herds often follow around larger herbivores such as traitracos (Secernosaurus koerneri) or sotaquis (Drusilasaura deseadensis) to eat whatever creatures they stir up, and also for protection. Their tails are used for signaling danger, puffing up when they sense predators are near or when they are aggravated by a rival. Males generally puff up their tails and perform rudimentary dances in order to express who is dominant, but these fights will sometimes turn into kicking and biting. Pufftail females lay up to 6 brownish eggs each, but they don't make a communal nest and instead construct their own nests. Generally, one female is in charge of watching over all of the nests including her own while the rest of the group forages. Eggs hatch relatively quickly and the young also grow up quickly, reaching maturity at 12 months. Pufftails face many dangers, such as dromaeosaurs and abelisaurs like battering rams (Xenotarsosaurus bonapartei), but their main threat is the opportunistic yeumens (Aniksosaurus darwini). Carcharodontosaurs are a rare threat.
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Comments11
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Patchi1995's avatar
Was this the smallest of all ornithopods?