continuous with immediate transformation of sclera meninx dura mater Wikipedia:Dura_mater SCTID:362301008 CALOHA:TS-2008 NLXANAT:090206 GAID:691 MESH:D004388 MA:0001115 Thick, fibrous meningeal covering surrounding the brain and spinal cord. It is the outermost of the three meningeal coverings. It consists of two layers: the periosteal dura linking the inner surface of the skull and the meningeal dura that lies above the arachnoid dural membrane. The meningeal layer draws away from the periosteal layer and certain locations to form the dural reflections. NCIT:C32488 BTO:0001637 EMAPA:32664 neuronames:1462 FMA:9592 dura mater of neuraxis UBERON:0002363 pachymeninges dura ectomeninx