Would The Ancient Romans Have Left Mark Antony's Body For The Egyptians To Bury Beside Cleopatra?

Yes, if Marc Antony's cadre of political supporters knew his wishes on the matter. Burial rights in Roman times were highly sacrosanct and individualistic. And Augustus wasn't exactly on the best of terms with Marc Antony when he died.

And Marc Antony and Octavia (his wife) were at utter loggerheads much of the time.

If Mark Antony had not tried to wage war on Rome to get power back from Augustus then he would have been brought back to Rome for his cremation. Augustus left Mark Antony's body in the care of the Egyptians because he was considered to have been corrupted by the wiles of Cleopatra and a traitor. After Mark Antony killed himself, Cleopatra realized she was not being kept alive by Augustus to rule Egypt, but to be paraded around to show Augustus' power. So she killed herself also.

Archaeologists have not found the bodies of Mark Anthony or Cleopatra yet, yet they are engaged on it. they suspect that the two have been buried next to a minimum of one yet another someplace exterior of Alexandria, Egypt.

He wouldn't you are right, but he could also burn it without proper burial.