101,700 B.C.
At the end of the first millennium of the war, the Furies are forced to
retreat from the rim of the galaxy by the Unclean. For century after
century the Furies retreat. The first great stand engages 93,109,907
Fury vessels as recorded by Subcrat Ramszak the Ok'San. The last great
stand will involve a mere 50,000 ships [V #9]...

100,000 B.C.
An unknown race (possibly related to the Sarpeidons) engineers a Dyson
Sphere habitat. A volume of 200 light years of space will be mined
for the raw materials, resulting in the Great Wall void [TNG #50,
TNG 230].

This is the era during which the Jindarians end their terrestrial
existence and travel as gypsies throughout the galaxy. Their first
ships are powered asteroids. Their place of origin shall remain a
mystery [SFB].

97,800 B.C.
Atomic warfare on Talos IV destroys the surface of the planet and
drives the Talosians underground. While they develop impressive
mental powers their technology degenerates and eventually they will
lose all knowledge of their ancestors' tools and machines [Me, EOM].

97,736 B.C.
The Meztoriens explore the Careta system and unearth the artifacts of
the Kh!lict on the 4th planet. Realizing their danger, the Meztoriens
shield the ruins with sensor-jamming fields. The Meztoriens will
eventually succumb to the Darneel Invasion in the Dulciphar star cluster.
The surviving fragments of their empire fall into a dark age from which
they will never emerge [TOS #65].

97,715 B.C.
Space-time impressions (0's "footsteps" from half a million years ago)
are first charted by Verathan explorers [TNG #48].

97,710 B.C.
All Erisian worlds are evacuated, including Temaris IV--possibly due
to the presence of the Borg [GN 10].

97,709 B.C.
An unknown civilization leaves behind a long-distance frequency-focus
transporter on the planet Faramond. The entire planet is a giant
transporter conductor capable of transporting whole civilizations a
distance of light-millennia. However, the builders take the control
mechanism for the machine with them, leaving behind an empty hulk. Over
the millennia, the Fabrini and half a dozen other races will stumble
across it, each studying the machine and abandoning it [GN 12].

87,035 B.C.
The interstellar gate system is abandoned [TOS #43].

77,630 B.C.
The Fury of Vulcan is recorded by the testimony of many witnesses
when a Vulcan hunter-warrior named Torkas of the Vehm kills 97 of
his own village with a leaf-bladed Toth spear before being killed.
Ok'San the Overlord of the Furies is the most despised of all
Vulcan demons and she represents loss of control and loss of
reason. The Ok'San are the Sanoktisandaruval of the Furies who
have enslaved the Vulcan people through the use of terror-projection
machines. The Furies will rule the Vulcans for tens of thousands
of years, burning their domination into the Vulcan race memories, until
the arrival of the Unclean (viewed as gods by the Vulcans). The
terror weapons have no affect upon the Unclean so the Ok'San throw
their Vulcan slaves by the tens of thousands to the Unclean to die.
The Furies flee Vulcan, vowing to return and reclaim what they own, and
the planet of suddenly free slaves falls to barbarism. The "war of all
against all" will continue until the time of Surak [V #9].

67,710 B.C.
Edris goes nova as predicted by the Erisians 30,000 years earlier [GN 10].

52,000 B.C.
The ecosphere of Rigel IV finally dies after hundreds of thousands
of years of indifferent struggle. No plant, animal, or microbe
remains on the surface. The Rigellians simply glaze over the
lifeless ground and use it for parking space for more trade
vessels. Artificial life support has already been functional for
nearly a million years [FASA].

47,737 B.C.
Lokai, a political criminal, escapes from his home planet Cheron.
Bele, a law enforcer, goes in pursuit--which will last 50,000 years.
When the two return to Cheron they will find their homeworld a dead
planet in the 2260s. Cheron's destruction will later be attributed
to the (*) hate-consuming entity eventually rediscovered on Beta XIIA
in 2263 [LB, TNG #48, Dv].

47,735 B.C.
A marked decrease in volcanic activity occurs on Vulcan [EOM].

47,725 B.C.
The U.S.S. "Lynx" (NCC-4600) timeship takes measurements of the Coal
Sack Nebula and tests the Expansion Theory on her fifth voyage [LTP].

47,629 B.C.
On Alcawell, in the Delta Quadrant, the Second Exodus is ended and the
world is empty. The inhabitants have left via dimensional shifting.
Fifty thousand years later most everything is totally gone except for the
Alcawellian time ships which must be protected by Watchmen from interstel-
lar looters [V #2].

42,730 B.C.
The "Sky Spirits" depart for Earth at approximately this time. It
will take them more than three generations to reach Sol from the
Delta Quadrant [V 125].

42,628 B.C.
Native Americans are genetically bonded by alien humanoids known in
legend as the "Sky Spirits." These Humans are known as the Inheritors
[V 125].

40,000 B.C.
Like thousands of other races before them, the Preservers come to
trade at Rigel. They begin with a small volume then swell to a
flood of ships, then fade away, like thousands of other races
before them [FASA].

37,628 B.C.
The 1st "Awakening" occurs on Urrytha in the Delta Quadrant [V #12].

35,000 B.C.
The Rigellians learn of the preponderence of humanoid races on both
sides of the Arm. Still they do not suspect the truth [FASA].

30,000 B.C.
A stone relic for the Emissary is buried beneath B'hala on Bajor.
It will mark a prophecy of either peace or destruction for Bajor's future
in the Reckoning [DSN 545].

On Sierra Bravo 112-II a deep-dwelling sea entity is born during this
period [DSN #25].

During this period, the Archimedes principle is discovered on Vulcan
[DSN #24].

27,725 B.C.
The U.S.S. "Lynx" (NCC-4600) prototype timeship catalogs x-ray sources
in the Cygnus star clusters on her second mission [LTP].