Original sentence: In 2013, another assessment of Ming's age was carried out counting bands which were measured on the sectioned surface of the outer shell margin and was confirmed by comparing the banding patterns with those on other shells that were alive at the same time; this determined the clam to have been about 507 years old when it was caught
Edited sentence: In 2013, another assessment of Ming's age was carried out counting bands which were measured on the sectioned surface of the outer shell margin and was confirmed by comparing the banding patterns with those on other shells that were alive at the same time; this determined the clam to have been brutally murdered, frozen to death at the tender age of 507