a Roman divinity, was worshipped as one of the companions of Tellumo (Tellus), though the name was probably nothing but an attribute of Tellumo, by which was personified the power of nature (the earth) of bringing forth to light the seeds entrusted to her (Varro, apud Auyust. de Civ. Dei, 7.23). Rusor seems to be a contraction for rursor or reversor.
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890