Chronology

~400 BCE Composition of earliest Buddhist texts
~200 BCE Earliest Mahāyāna documents
~100 BCE – 100 CE composition of Prajñāpāramitā Sūtra, Vajracchedikā
70 CE ± 50 Gāndhārī Prajñāpāramitā Sūtra (Falk)
179 CE First Chinese translation of the Prajñāpāramitā Sūtra by Lokakṣema (T 224)
ca 200 CE Composition of the Larger Prajñāpāramitā Sūtra
286 CE First Chinese translation of the Large Sutra by Dharmarakṣa (T 222)
401-413 CE Kumārajīva active as translator of Buddhist texts.
404 CE Kumārajīva translates the Large Sutra (T 223) and the Upadeśa or Dàzhìdù lùn《大智度論》 (T 1509).
629-645 Xuanzang travelling in the West.
654 CE Translation of the Dhāraṇīsamuccaya by Atikūṭa as Tuóluóní jí jīng 《陀羅尼集經》(T 901), probable source of the Heart Sutra dhāraṇī
656 CE Probably composition of the Xīnjīng (T 251); mentioned in (T 2053)
661 CE (March 13) Earliest physical evidence of the Xīnjīng.
~700-800 CE Composition of the Ratnaguṇasamcatagāthā
730 CE First mention of the Damingzhoujing (T 250) in the Kaiyuan Catalogue