What is a marble group in the Vatican at Rome, representing the priest Laocoön, with his sons, infolded in the coils of two serpents, as described by Virgil called?

laocoon — (Sculp.) A marble group in the Vatican at Rome, representing the priest Laocoön, with his sons, infolded in the coils of two serpents, as described by Virgil. (Webster's 1913.)

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