The tombs were first discovered between April and July 2024 and span more than 2,100 years, Xinhua reported.
Four tombs date from the Han Dynasty, from 206 BC to 220 AD, eight tombs date from the Jin and Southern Dynasties, from 265-589 AD, and 15 tombs date from the Tang Dynasty, from 618-907 AD.
More than 120 tombs date from the Ming and Qing dynasties, which ruled China from 1368 AD to 1911 AD.
Researchers also discovered 48 tombstones from the Republic of China (1912-1949) - China's first modern republic that replaced the Qing Dynasty, China's last dynasty and ended over 2,000 years of feudalism.
Most of the tombs, especially from the Ming and Qing dynasties, follow a consistent spacing pattern, suggesting that the entire site was part of a well-organized and planned cemetery.
Organized burial sites used throughout the ages are valuable records of humanity's past.
Archaeologists excavating at such burial sites around the world have found that they preserve material culture much better than other types of archaeological sites .
For example, nearly 200 ceramics as well as porcelain, bronze, jade and bead ornaments were also discovered at the latest excavation site spanning about 1,300 square meters.
These relics can reveal important information about the social, political, economic and ideological changes in China's past over the years.
Excavations have been conducted at the zoo since its construction in 1956, with researchers unearthing nearly 500 ancient tombs at more than 30 sites in the area.
Major discoveries so far include a nearly intact 10-meter-long tomb from the Eastern Jin Dynasty (317-420 AD). Researchers consider it the largest and best-preserved tomb from this period to date.
A smaller Southern Dynasty tomb is also notable, being the important joint burial of an unidentified couple.
The most striking thing, researchers say, is that the newly excavated graves are very densely distributed.
Major discoveries include a nearly intact tomb from the Eastern Jin Dynasty and a well-preserved tomb from the Southern Dynasties.
Researchers hope this valuable discovery will help better understand construction technology during the Southern Dynasties and Jin periods.
Further studies of two important tombs unearthed in the latest archaeological excavation may help shed light on funeral customs during the Six Dynasties period in Guangzhou.
