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| | Hypsilophodontia |
 | | Tenontosaurus is sometimes considered a basal Iguanodontian; Muttaburrasaurus is variously considered a basal Iguanodontian, a specialised Hypsilophodont, Camptosaurid, or an Iguanodontid. |
 | | It was more heavily-built and stouter of limb then most hypsilophodonts, and probably, like its bigger cousins Tenontosaurus and Muttaburrasaurus, or even a small iguanodontid, and capable of getting about on all fours. |
 | | Comments: distinguished by its unusually long tail (which may or may not have been an aid in swimming), Tenontosaurus has the misfortune to be continually portayed by dinosaur artists as being torn apart by a pack of hungry Deinonychus. |
| www.kheper.net /evolution/dinosauria/Hypsilophodontia.htm (3249 words) |
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