Shmuel died in the year 4010, which was the year 562 according to the Seleucid era [(and in Yuchsin it says 565, but this is a scribal error)].

Second Generation of Amoraim

Rav Yehuda bar Yechezkel became head [of the academy] in Pumbedita [(see there)]. This was in the year 4010 [(and in Shir HaShirim, chapter 8, section 2, it is written year 4015)]. He was born on the day that Rabbi [Yehuda HaNasi] died [(Tzemach David). Rashbam wrote in Yuchsin that Rav Yehuda died in the year 610 (according to the Seleucid era, which is the year 4058). (See nearby entries for years 4025 and 4050, and see entry for year 4025 regarding bar Chama).

In Gittin (folio 60a) the shofar (of the eve of the Sabbath, and Rav Sherira Gaon explains in the chapter on the Shofar that it was customary to blow it to signal the students of the academy, Rashi) was originally at the academy of Rav Yehuda, and later (when he died) at the academy of Rabbah, and later at the academy of Rav Yosef, and later at the academy of Abaye, and finally at the academy of Rava].

Rav Huna reigned in Sura. He was the first head of the academy in Sura after Shmuel [(Tzemach David)] and reigned for 40 years [(Yuchsin, in the letter of Rashbag), thus he died in the year 4050, and so it says at the end of Yuchsin. And there in the letter of Rashbag nearby, it writes that Rav Yehuda died in the year 628 (i.e., according to the Seleucid era), which is the year 4056, thus he reigned for 46 years].

In their days, the heart of the Persians turned against the Jews, and they turned the heart of the king against his will, and they put to death with harsh tortures many wealthy and wise men, and they made their yoke heavy until many converted [(Shir HaShirim)].

Rav Nachman (without further specification, this refers to bar Yaakov [see there]) was the son-in-law of the Reish Galuta, and the three of them (Rav Yehuda, Rav Huna, and Rav Nachman) reigned from the year 4010 [(and in Shir HaShirim, page 35, section 272, it is written year 4015)] until the year 4060 [(Tzemach David, and so it says in Yuchsin in the generations of the Amoraim, second generation) and see entry there, see there].