Chord/Tab song: Archaeopteryx

I didn't write these, they are from http://wiki.illemonati.com.
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( Tab from: http://www.guitartabs.cc/tabs/l/lemon_demon/archaeopteryx_crd.html )
Bb Eb Bb Eb (x2)
[(Bb)]Saw him [Eb]in a [Bb]book of [Eb]fossils
[Bb]dancing [Eb]with [Bb]some old [Eb]Apostles.
[Bb]I think if [Eb]I went [Bb]back in [Gm7]time
Ab7 EbM7
hed be there, alive,
root of all my [Bb]jealousy[Eb].[Bb][Eb]
[Bb] [Eb] [Bb] [Eb]
[Bb]Grounded [Eb]in my [Bb]deva[Eb]station,
[Bb]I cant [Eb]get no [Bb]avi[Eb]ation.
[Bb]Up in the [Eb]sky, his [Bb]grandchildren [Gm7]fly.
Ab7 EbM7
I dont sing, I sigh.
Tell the Archae[F]opter[Gm]yx
[Bb]that I never [A7]want[Eb]ed this
Gm Ahlfdim7Gm
featherhead metropolis.
[F]Liar [D7]liar, [Gm7]wings [D7]on [Eb]fire.
Bb Eb Bb Eb (x4)
[Eb]Now [Bb]the [Cm7]clock [Gm]ticks,
and I [Eb]hope [Bb]this [Cm7]will [Gm]fix
all the [Eb]pre[Bb]sent [Gm7]bird [C9]tricks.
[Bb]Farewell, [Cm7]Mr. [Gm]Archaeopte[Bb]ryx[Eb][Bb][Eb]
Bb Eb Bb Eb (x6)
Bb Eb Bb Eb Ab7 Eb
[F]Eb[Gm] Dm[Bb]7 C[Gm]m7 Gm (x2)
[F]Eb[Gm] Dm[Bm]7 C[Gm]m7 Gm (x2)

These chords aren't really seventh chords, but rather weird augmented FR +6 (augmented
chords.
There is no possible notation for them, but they only differ from a normal seventh in
way.
That is that the 5th above the bass is lowered one half-step.
It makes for a very interesting sound.