Magnamanus
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Magnamanus Temporal range: 130 Ma Early Cretaceous |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Order: | †Ornithischia |
| Suborder: | †Ornithopoda |
| Clade: | †Iguanodontia |
| Genus: |
†Magnamanus Vidarte et al., 2016 |
| Type species | |
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Magnamanus soriaensis Vidarte et al., 2016 |
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Magnamanus is an extinct genus of herbivorous ornithischian dinosaur belonging to Iguanodontia, that lived during the Early Cretaceous in Spain.
Magnamanus is a large ornithopod, with an estimated length of between nine and ten meters, and weight over three tons—a similar size to Iguanodon bernissartensis. The hand is broad and similar to other basal members of Iguanodontia, with a protruding thumb spine and a fifth finger.
The descriptors established nine distinctive features for this taxon, all autapomorphies. The dentary contributes to the front coronoid process of the lower jaw so that the last dentary tooth is located on the slope of the protrusion, instead of on the basis of it. The length of the shoulder amounts to six times the upper width, and seven times the minimum width. In the shoulder the front processus acromion is facing on the other side of the rear projection. When the humerus is the inner corner of the upper edge is not in the same plane as the outer bottom joint ball, which makes contact with the radius, and the outer bump is located above the level of the inner cusp which, for the ulna. In the ulna, the lower end is wider than the upper, and club-shaped. The lower end of the radius is clavate. The wrist consists of three elements, one of which is a fusion of the radial and intermedial, and the second is a fusion of the ulnar carpal, and the third and the third party is identical to the fifth carpal. The formula of the phalanges is 1-3-3-2- (3/4). The width of the wrist is 70% of the length of the hand. The processus praepubicus is straight without widening at the end or grooves, and in the base is not closed, the obturator foramen in the base and is half covered on the inside with a flat bone plate.
In the early twenty-first century Carolina Fuentes and Manuel Meijide conducted excavations along with their children on the Zorralbo I site in the marshes of Golmayo, five kilometers west of Soria. Between 2000 and 2004 they dug up the skeleton of a euornithopod, one of the most complete skeletons of a dinosaur from the Lower Cretaceous of Spain that has been found.
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Wikipedia