Pink Floyd Eras

[Eclipse]

Wikipedia provides a very interesting Section division on the band's history:

1 History
1.1 1963–1967: Early years
1.1.3 The Piper at the Gates of Dawn

1.2 1967–1978: Transition and international success
1.2.2 A Saucerful of Secrets (1968)
1.2.3 Ummagumma (1969), Atom Heart Mother (1970), and Meddle (1971)
1.2.4 The Dark Side of the Moon (1973)
1.2.5 Wish You Were Here (1975)
1.2.6 Animals (1977)

1.3 1978–1985: Waters-led era
1.3.1 The Wall (1979)
1.3.2 The Final Cut (1983)

1.4 1985–1994: Gilmour-led era
1.4.1 A Momentary Lapse of Reason (1987)
1.4.2 The Division Bell (1994)

1.5 2005–present: Reunion, deaths, and The Endless River
1.5.4 The Endless River (2014) and Nick Mason's Saucerful of Secrets


I really like this division, because it puts an emphasys on the more collaborative phase between the band members, from Sauceful until Animals.
It is good to listen to the albums as a whole experience. I have a playlist from ASOS until Animals (minus the OSTs, though I like them a lot too), according to the sequence presented on Section 1.2 from the article above. Therefore, it adds to some 5-6 hours of my fav PF era, and I like to listen to it while at work.

Do you agree with the division within Section 1.2?
Does anyone know if there is some other proposed divisions of the bands' eras, either by a musicologist thesis/dissertation, either by other articles/online encyclopedias, either by personal views on how the bands' sound shifted through the years?
I'm curious for suggestions, references, and of course your opinions regarding this.

[ZiggyZipgun]

It's a little odd. Up to and throughout 1965, the group featured four or five other people, with no particular focus on anything. 1966 and '67 were very much dominated by Syd's writing and their newfound sound - Rick had gone from playing saxophone to rhythm guitar to the organ, and they now had access to other sounds in the studio. 1968 was just the messy conclusion of that same era. Going by the songwriting credits it might be easy to mark a change, but they weren't happy with their new songs and they were still working in very much the same scene as before.

1969 was when they attempted to move away from their previous material, even trying to retire those songs from their sets, which they effectively did by the end of 1971, for the most part.

1972 definitely marked a different way of working and of presenting the material live and on the record - '73 is just when the general public found out about it. This really didn't change until after Animals. Their individual input had varied pretty wildly over that period, but due to how their albums came together, they might not have seen it that way until well after the fact. That era probably ended a few months into the process of recording The Wall, considering they managed to complete at least one demo version of the album at their own studio in London before having to become tax exiles in France.

1966-68 Good
1969-71 Better
1972-79 Best
1980-82 Backing band for a bastard
1983-86 Hiatus
1987-91 Financial success
1992-96 Critical success