New kinds of graves, named after a grave at Suvorovo, appear about 4200-4000 BCE north of the Danube delta in the coastal steppes of Ukraine near Izmail, more than five hundred years before the geographic expansion evidenced by the presence of horse bones.
Suvorovo graves are similar to and probably derive from earlier funeral traditions in the steppes around the Dnieper River.
Some Suvorovo graves contain polished stone mace-heads shaped like horse heads and horse tooth beads.
Earlier steppe graves also had contained polished stone mace-heads, some of them carved in the shape of animal heads.
Settlements in the steppes contemporary with Suvorovo, such as Sredni Stog II and Dereivka on the Dnieper River, contained twelve to fifteen percent horse bones.
When Suvorovo graves appeared in the Danube delta grasslands, horse-head maces also appeared in some of the indigenous farming towns of the Tripolye and Gumelnitsa cultures in present-day Romania and Moldova, near the Suvorovo graves.
These agricultural cultures had not previously used polished-stone maces, and horse bones were rare or absent in their settlement sites.
Probably their horse-head maces had come from the Suvorovo immigrants.
The Suvorovo people in turn acquire many copper ornaments from the Tripolye and Gumelnitsa towns.