The term already defined in the Tabulae duodecim (Cic. Leg. 2, 64) as ‘tomb’ was, according to Paul. Fest. 6, 78; 25,3; 27,11 and Serv. Aen. 11,201, the place where the corpse was cremated and the remains buried, whilst the place where dead bodies were actually burnt was generally known as ustrinum . There is a lot of archaeological evidence of this type of funeral.
T. Bechert, Röm. Germanien zwischen Rhein und Maas, 1982, 244-246
M. Struck (ed.), Römerzeitliche Gräber als Quellen zu Rel., Bevölkerungsstruktu…