diff --git a/src/proc/asset/struct-factory-impl.hpp b/src/proc/asset/struct-factory-impl.hpp
index 59a61deba..3a28e80e4 100644
--- a/src/proc/asset/struct-factory-impl.hpp
+++ b/src/proc/asset/struct-factory-impl.hpp
@@ -212,7 +212,9 @@ namespace asset {
     ASSERT (sequence);
     RBinding newBinding = Session::current->getRoot().attach (MObject::create (sequence));
     ASSERT (newBinding);
-    return new Timeline (idi, newBinding);
+    PTimeline newTimeline = Timeline::create (idi, newBinding);
+    ENSURE (newTimeline);
+    return newTimeline.get();
   }
   
   template<>
diff --git a/src/proc/asset/timeline.cpp b/src/proc/asset/timeline.cpp
index 65ad28d17..a9a0f6345 100644
--- a/src/proc/asset/timeline.cpp
+++ b/src/proc/asset/timeline.cpp
@@ -26,6 +26,7 @@
 //#include "proc/mobject/placement.hpp"
 //#include "proc/mobject/session/mobjectfactory.hpp"
 #include "proc/mobject/session/binding.hpp"
+#include "proc/assetmanager.hpp"
 
 namespace asset {
   
@@ -35,13 +36,26 @@ namespace asset {
   Timeline::Timeline (const Asset::Ident& idi, RBinding const& sequenceBinding)
     : Struct (idi)
     , boundSeqence_(sequenceBinding)
-//  : track (makeDefaultTrack ())
-//  , clips (0)
   {
     REQUIRE (boundSeqence_);
   }
   
   
+  PTimeline
+  Timeline::create (Asset::Ident const& idi, RBinding const& sequenceBinding)
+  {
+    REQUIRE (getRegistry);
+    
+    PTimeline newElement (AssetManager::instance().wrap (*new Timeline(idi, sequenceBinding)));
+    getRegistry().append (newElement);
+    
+    ENSURE (newElement);
+    ENSURE (getRegistry().isRegistered(*newElement));
+    return newElement;
+  }
+  
+  
+  
   
   
   
diff --git a/src/proc/asset/timeline.hpp b/src/proc/asset/timeline.hpp
index 50937591f..6bffc5112 100644
--- a/src/proc/asset/timeline.hpp
+++ b/src/proc/asset/timeline.hpp
@@ -57,7 +57,7 @@
 //#include "proc/mobject/placement.hpp"
 #include "proc/mobject/mobject-ref.hpp"
 //#include "proc/mobject/session/binding.hpp"         ////TODO avoidable??
-//#include "lib/p.hpp"
+#include "lib/p.hpp"
 #include "lib/element-tracker.hpp"
 
 
@@ -79,27 +79,32 @@ namespace asset {
   
   
 //  using lumiera::P;
+  class Timeline;
+  typedef lumiera::P<Timeline> PTimeline;
+  
   
   /**
    * TODO type comment
    */
   class Timeline
     : public Struct
+    , public lib::AutoRegistered<Timeline>
     {
       typedef mobject::session::RBinding RBinding;
       
       RBinding boundSeqence_;
       
-    public:
-      void detach() { TODO("Timeline-Session registration"); }
+      Timeline (Ident const&, RBinding const&);
+      
+    public:
+      /** create and register a new Timeline instance */
+      static PTimeline create (Asset::Ident const& idi, RBinding const& sequenceBinding);
+      
+//      void detach() { TODO("Timeline-Session registration"); }
       
-    protected:
-      Timeline (const Asset::Ident& idi, RBinding const& sequenceBinding);
-      friend class StructFactoryImpl;
     };
     
   
-  typedef P<Timeline> PTimeline;
   
   
 ///////////////////////////TODO currently just fleshing the API