In general, the copyright expires 70 years after the author's death. Ancient is an ambiguous term that it is generally taken to mean hundreds of years old. You can read what the University of California has to say about it if you click on the link below.
Charles Palmer Phillips has written: 'The law of copyright in works of literature and art and in the application of designs' -- subject(s): Art, Copyright, Design protection
Works are automatically protected once they are fixed, but you can register your art with the copyright office if you wish.
Kai Brodersen has written: 'Polyainos' -- subject(s): Congresses, Early works to 1800, Military art and science, Criticism and interpretation 'Prognosis' 'Die sieben Weltwunder' -- subject(s): Ancient Art, Art, Ancient, Seven Wonders of the World
Works in the public domain are not protected by copyright.
The art of the ancient Greeks and Romans is called classical art.
All art is subject to the copyright of the original artist anyway.
At a museum?
Furio Durando has written: 'Greece' -- subject(s): Accessible book, Guidebooks, Antiquities, History 'Italy' 'Parole, pietre, confini' -- subject(s): Centuriation (Surveying), History, Inscriptions, Latin, Latin Inscriptions, Maps, Romans, Sources 'Ancient Greece' -- subject(s): Pictorial works, Hellenistic Art, Ancient Art, Antiquities, Civilization, Tours, Greece, Ancient Cities and towns, Greek Architecture 'Ancient Italy' 'Greece' -- subject(s): Ancient Art, Greek Art, Civilization, Hellenistic Art, Greek Antiquities
Not necessarily. Notification (or registration) is not required for protection.
Artistic works are automatically protected by copyright as soon as they are fixed in a tangible medium; neither registration nor notification is required.
Glubok has written: 'Art and archeology' -- subject(s): Ancient Art, Archaeology, Art, Ancient
Copyright law cannot protect ideas, only the expressionof them in writing, sound, art, etc.