Iguanodon in the collections of the Natural History Museum in London

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The latter includes the general evidence from the overall physical design (shape and arrangement of the bones) of the skeleton or skull, and the influence that these would have on the distribution and functioning of the muscles. Animatronic dinosaur for sale Such reconstructions also need to account for such factors as the proposed method of locomotion.

 

For example, the details of the joints between the limb bones, a consideration of the simple mechanics associated with the positioning and range of movement of the limbs that was possible at each limb joint; and, in some cases, the real evidence left behind by dinosaurs in the form of fossilized tracks that indicate how they really did move around when alive.

 

While examining many bony fragments of Iguanodon in the collections of the Natural History Museum in London, an unusual specimen caught my eye. animatronic dinosaur supplier in china It consisted of the battered remains of a large, partial skull. A few teeth exposed in its upper jaw betrayed that it was indeed Iguanodon, but beyond that it seemed useless anatomically. For interest鈥檚 sake, I decided to cut the specimen in half to see if any of its internal anatomy was better preserved. What was revealed proved to be unexpectedly interesting and exciting. Although the bones were battered and eroded, it was clear that this skull had been buried in soft, silty mud that had seeped into all the spaces. The mud had hardened (lithified) to a concrete-like consistency over millions of years. The lithification process was so complete that the mudstone had become impermeable so that ground-water containing minerals was unable to seep through the rock and mineralize the skull bones; as a result the bones were relatively soft and crumbly.

This peculiar preservation offered an unusual opportunity to explore skull anatomy. Walking dinosaur costume Careful removal of the crumbly skull bones (rather than the hard mudstone matrix) revealed the shape of the internal spaces in the skull as a natural mudstone cast (Figure 25). It included the cavity where the brain had lain, the passages for the inner ear, and many of the blood vessels and nerve tracts that led to and from the brain cavity. Given that this particular animal had died approximately 130 million years ago, it does seem remarkable that it should prove possible to reconstruct so much of its soft anatomy.

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