The Miocene was the first epoch of the Neogene period (23-2.5 million years ago), followed by the much shorter Pliocene epoch (5-2.6 million years ago); both the Neogene and Miocene are themselves subdivisions of the Cenozoic Era (65 million years ago to the present). Climate and geography.
The dictionary meaning of the word Digress is 'to leave the main subject temporarily in speech or writing.' or simply deviate. As you say,I digress means  I am straying from the main subject right now. . Like in this sentence - 'I need to digress a bit to let the ink dry.'. Hope this helps :)
dignified (dÉªgnÉªfaÉªd ) adjective. If you say that someone or something is dignified, you mean they are calm, impressive and deserve respect. He seemed a very dignified and charming man. Mr Smith is maintaining a dignified silence. Synonyms: distinguished, august, reserved, imposing More Synonyms of dignified.