diff --git a/Changes b/Changes
index a7e6c5d91a..d03bdabcfb 100644
--- a/Changes
+++ b/Changes
@@ -1,7 +1,10 @@
 10.6.x.x (relative to 10.6.4.0)
 ========
 
+Improvements
+------------
 
+- USDScene : Added loading of ArnoldProcedural prims as Cortex ExternalProcedural objects.
 
 10.6.4.0 (relative to 10.6.3.1)
 ========
diff --git a/contrib/IECoreUSD/src/IECoreUSD/ArnoldProceduralAlgo.cpp b/contrib/IECoreUSD/src/IECoreUSD/ArnoldProceduralAlgo.cpp
index 6d543be0df..4ce6b30269 100644
--- a/contrib/IECoreUSD/src/IECoreUSD/ArnoldProceduralAlgo.cpp
+++ b/contrib/IECoreUSD/src/IECoreUSD/ArnoldProceduralAlgo.cpp
@@ -55,6 +55,7 @@ namespace
 const pxr::TfToken g_arnold( "arnold" );
 const pxr::TfToken g_arnoldAlembic( "ArnoldAlembic" );
 const pxr::TfToken g_arnoldNodeEntry( "arnold:node_entry" );
+const pxr::TfToken g_arnoldProcedural( "ArnoldProcedural" );
 const pxr::TfToken g_arnoldProceduralCustom( "ArnoldProceduralCustom" );
 const pxr::TfToken g_arnoldUsd( "ArnoldUsd" );
 
@@ -87,6 +88,10 @@ IECore::ObjectPtr readArnoldProcedural( pxr::UsdGeomGprim &gprim, pxr::UsdTimeCo
 		gprim.GetPrim().GetAttribute( g_arnoldNodeEntry ).Get( &nodeEntry, time );
 		result->setFileName( nodeEntry );
 	}
+	else if( gprim.GetPrim().IsA( g_arnoldProcedural ) )
+	{
+		result->setFileName( "procedural" );
+	}
 	else if( gprim.GetPrim().IsA( g_arnoldUsd ) )
 	{
 		result->setFileName( "usd" );
@@ -157,6 +162,7 @@ bool arnoldProceduralMightBeTimeVarying( pxr::UsdGeomGprim &gprim )
 }
 
 ObjectAlgo::ReaderDescription<pxr::UsdGeomGprim> g_arnoldAlembicReaderDescription( g_arnoldAlembic, readArnoldProcedural, arnoldProceduralMightBeTimeVarying );
+ObjectAlgo::ReaderDescription<pxr::UsdGeomGprim> g_arnoldProceduralReaderDescription( g_arnoldProcedural, readArnoldProcedural, arnoldProceduralMightBeTimeVarying );
 ObjectAlgo::ReaderDescription<pxr::UsdGeomGprim> g_arnoldProceduralCustomReaderDescription( g_arnoldProceduralCustom, readArnoldProcedural, arnoldProceduralMightBeTimeVarying );
 ObjectAlgo::ReaderDescription<pxr::UsdGeomGprim> g_arnoldUsdReaderDescription( g_arnoldUsd, readArnoldProcedural, arnoldProceduralMightBeTimeVarying );