
Suppose you have experimented with several alternatives, settled on one, then you want to work with the features outside of the current layer. You can export the selected features to a new shapefile or geodatabase feature class using the ArcMap Export Data function. You can also use this function to create a new layer that only contains the selected features.
Select features using any selection method (interactively, according to location, or by attribute).
Right-click the layer that contains the selected features, point to Data on the pop-up menu, and click Export Data.
Click the Export drop-down list and click Selected Features.
Click the Use the same Coordinate System as this layer's source data radio button.
Click the Browse button and navigate to a location to save the exported data.
Type the name for the output data source.
Click the Save as type drop-down list and select the output type.
Click Save.
Click OK.
Select features in a layer using any ArcMap selection method.
In the table of contents, right-click the layer, point to Selection on the pop-up menu, and click Create Layer From Selected Features. The new layer is added to the map.
For more information, see ArcMap Help.