Moloch horridus is an Australian lizard, also known as the mountain devil, the thorny lizard, or the moloch. This is the sole species of genus Moloch. Thorny dragon grows up to 20 cm (7.9 in) in length, and it can live for 15 to 20 years. Most of these lizards are coloured in camouflaging shades of desert browns and tans. These animals are covered entirely with conical spines that are mostly uncalcified.
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The function of the meninges is to cover and protect the brain. It also encloses and protects the vessels that supply the brain. It has three layers, Dura mater, Arachnoid mater and Pia mater. In between the layers is filled with Cerebrospinal fluid. Dura mater (literally means durable mother) itself is formed of two distinct layers, Periosteal dura mater just adjacent to the skull and Meningeal dura mater below that. Next is the arachnoid mater which is named due to its spider leg appearance. Deepest layer is the pia mater (literally means soft mother) which is a very delicate connective tissue.