Is this perhaps analogous to some cultural sites e.g Oaxaca/Monte Alban in justifying 2 periods?
I would agree two timeline assignments will be in place. By the way, we have already got such assignments also for natural sites: Australian Mammal Sites and Lake Turkana.
Missing is the Mezozoic era, which can be split in the Jurassic, Triassic and Cretaceous periods.
It's the MeSozoic era, and we do have it with currently 10 connections. The mistake probably stems from my spelling mistakes in the mails to Els...
Plus Holocene as the most recent? For e.g Beliize Reef and Srebarna.
Holocene starts roughly 12,000 years ago, which are 10th millenia BC. Then we already start counting millenia untill 3,000 ago, when we start counting centuries. This is also in line with the zooming order as pointed out by Els.
Here again the proposed chronological order:Proterozoic:
2.5 billion - 0.54 billion years BPPalaeozoic:
541 million - 252 million years BPTriassic:
252 million - 201 million years BPJurassic:
201 million - 145 million years BPCretaceous:
145 million - 66 million years BPPalaeocene:
66 miilion - 56 million years BPEocene:
56 million - 34 million years BPOligocene:
34 million - 23 million years BPMiocene:
23 million - 5.3 million years BPPliocene:
5.3 million - 2.6 million years BPGelasian:
2.6 million - 1.8 million years BPCalabrian:
1.8 million - 800,000 years BPMiddle Pleistocene
(formerly Ionian): 800,000 - 120,000 years BPLate Pleistocene
(formerly Tarantian): 120,000 - 12,000 years BP10th millenium BC
9th millenium BC
8th millenium BC