This result was naturally to be expected, for the lonians were from ancient times a trading and sea-faring people, while it was only at a comparatively late period that the Dorian stocks descended from their inland mountains to the seaboard, and they always kept aloof from maritime commerce.
The different groups of immigrants are very clearly distinguishable, especially by their monetary standards.

The Phocaean settlers coined according to the Babylonian standard which prevailed in Asia.

The Chalcidian towns followed in the earliest times the Aeginetan, in other words, that which originally prevailed throughout all European Greece, and more especially the modification of it which is found occurring in Euboea.

The Achaean communities coined by the Corinthian standard; and lastly the Doric colonies followed that which Solon introduced in Attica in the year of Rome 160, with the exception of Tarentum and Heraclea, which in their principal pieces adopted rather the standard of their Achaean neighbours than that of the Dorians in Sicily.
Time of the Greek Immigration The dates of the earlier voyages and settlements will probably always remain enveloped in darkness.

We may still, however, distinctly recognize a certain order of sequence.