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Palaeos Vertebrates 240.000 Squamata Overview |
 | | The Squamata are the most successful order of Cenozoic reptiles, with some six thousands recent species (more species than there are mammals!). |
 | | Technically, the Squamata are lepidosaurs, distinguished from other related and similar forms by a flexible and powerful jaw structure. |
 | | This came about through the loss of the lower temporal bar in the skull, which gave more room for the jaw muscles to develop, and the development of a special moveable hinge, the quadratojugal hinge, between the quadrate and squamosal bones in the skull. |
| www.palaeos.com /Vertebrates/Units/240Squamata/240.000.html (379 words) |
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