There is no classification of rock groups as "clastic sedimentary rocks."

Here's why:

* Clastic sedimentary rocks are a *type* of sedimentary rock, not a rock group. They are formed from fragments of other rocks (clasts) that have been transported, deposited, and cemented together.

* Rock groups are broader classifications of rocks based on their origin, composition, and texture. Examples include igneous rocks, sedimentary rocks, and metamorphic rocks.

So, there are no rock groups that are classified as clastic sedimentary rocks because clastic rocks are already a specific category within the broader group of sedimentary rocks.

Examples of clastic sedimentary rocks include:

* Conglomerate: Composed of rounded gravel-sized clasts

* Breccia: Composed of angular gravel-sized clasts

* Sandstone: Composed of sand-sized clasts

* Siltstone: Composed of silt-sized clasts

* Shale: Composed of clay-sized clasts

Let me know if you have any other questions!