Which ancient artworks influenced Michelangelo’s early sculpture?

Michelangelo’s early sculpture was significantly shaped by his access to the Medici art collection, which was dominated by fragments of ancient Roman statuary. His development as a sculptor was influenced by these classical works in several key ways:1

• Ancient Roman Sarcophagi: His early marble relief, Battle of the Centaurs (1490–92), was a direct variation on the composition of an ancient Roman sarcophagus.1
• Classical Anatomy and Contrapposto: In works like the Bacchus (1496–97) and the David (1501–04), Michelangelo adapted the formal vocabulary of classical antiquity, specifically utilizing the contrapposto stance to create a sense of natural, living movement.12
• Hellenistic Influence: While his earliest works focused on classical balance, he later incorporated the "twists and complications" characteristic of the Hellenistic period, particularly after the 1506 discovery of the Laocoön group. Additionally, the Belvedere Torso was a crucial Hellenistic fragment that influenced his energetic figure style.3

Through these studies, Michelangelo learned to simplify masses and organize bodies into clear, monumental forms, allowing him to master the Renaissance ideal of perfect humanity while infusing his figures with expressive power.12