497,636 B.C.
The Q Continuum triumphs over 0, Young Q, Gorgan, and (*). Gorgan and
(*) retreat into a black hole, the remains of the Tkon system. The One
is confined to the galactic core, behind a Great Barrier accretion disk
extending out 13 light years from the galactic center. 0, still unable
to travel at hyperlight velocity, is confined to the intergalactic
void, exiled from the Milky Way galaxy. The Q Continuum erects an
energy barrier around the galaxy to protect the Milky Way from 0,
banished without parole. The "Enterprise" will confront both barriers.
During 0's final struggle, a solid iridium asteroid is hurled at the
female Q. Q hastily rips open the fabric of the space-time continuum
and plunges the asteroid millions of years back in time where it will
impact Earth and consequently extinguish the dinosaurs. Q's punishment
will be to personally oversee the reconstruction of Earth's biosystem
and its life forms [TNG #49, ST V, WNM].

Q, disoriented by Trelane's assault (circa 2370) is in a disassociated,
totally noncorporeal state of free-floating energy at the edge of the
galaxy. Suffering from amnesia, Q will inhabit the Energy Barrier at the
galactic rim until well into the 23rd Century [GN 17].

497,626 B.C.
In the Delta Quadrant, a space-time rift rips apart the 5th planet in
the Birsiba system and consequently will reappear every few thousand
years near, inside, or just above every planet in the system.
In 2374, the rift will interfere with the operation of the Birsiban
worldwide transport system and cause a parallel universe population-
shifting catastrophe [V #15].

497,600 B.C.
The Ylans complete their Artifact, an interstellar museum of art. Over
the next half million years it will become a starship trap [TNG #13].

310,700 B.C.
Period 889 begins on Alcawell in the Delta Quadrant [V #2].

309,629 B.C.
On Alcawell, a team led by a man named Caxton discovers time travel. They
quickly learn that time lines could be changed with just the slightest
of tampering and a very small, powerful circle is founded to police time
travel violations. Population density is a problem to the Alcawellians
and space travel is quickly phased out following poor spacecraft design.
Colonizing the planet's history into Periods (500,000 year chunks) is the
solution and the Alcawellians begin to live in different eras [V #2].

307,629 B.C. (3,071 Real Time, Period 889)
The "Voyager" away team consisting of Chief Engineer Torres, Ensign Kim,
and Neelix accidentally commit an intraperiod journey back 310,000 years
to this year by tampering with an abandoned time shuttle on the planet
Alcawell. They will in turn be brought back to Period 1 (circa 44 million
B.C.) to Mean Time Control HQ [V #2].

304,710 B.C.
At the galactic rim, tens of thousands of Borg ships attack the
Cetacean Probe, inflicting damage to its crystal memory [GN 10].

The Trilex civilization on the Near Side of the Milky Way also
faces the Borg. They create a massive subspace pulse to
incapacitate their invasion fleet--by deliberately turning their
sun into a nova [GN 22].

The Borg trace the path of the Cetacean Probe back to its homeworld (a
distance of some 30,000 parsecs) and strike the planet. This Second
Winnowing slaughters thousands before the inhabitants shatter their
own homeworld's moon to construct an evacuation fleet from the rubble
[GN 10].

297,736 B.C.
The xenophobic Kh!lict civilization arises on the planet Careta IV.
Over the next 100 millennia they will exterminate every intelligent
race they encounter. The Kl!lict extermination will account for 73%
of the 'orphan' cultures in the sector [TOS #65].

297,630 B.C.
A Vulcan etching containing a Mayan-like language dates from this era.
A new analysis of the artifact will be conducted in 2370 and reviewed by
Captain Picard [TNG #33].

200,000 B.C.
The Rigellians are finally able to reverse the genetic flaws in
their DNA and RNA during this era, and no longer will be born with
a shuffling gait and bone problems [FASA].

197,736 B.C.
With the sun dimming and Careta IV's geothermal resources tapped to
the max, the Kl!ict civilization collapses [TOS #65].

197,725 B.C.
The Devil's Heart falls into the hands of the Iconians. They use its
technology for three generations to create the Three Gateways [GN 13].

197,665 B.C.
The Devil's Heart falls into the possession of Kanda Jiak, soon to be
the last of the Iconians [GN 13].

197,635 B.C.
The Iconian Empire dies out when the homeworld is annihilated by orbital
bombardment, but not before tens of thousands of Iconians escape to the
remote outposts of Ikkabar, DiWahn, and Dynasia. Kanda Jiak, the last
Iconian, deserts Iconia via a Gateway taking with him the Devil's Heart to
Vulcan where he dies. Ancient texts will describe the Iconians as
"demons of air and darkness." By 2370, Starbase 211's Kraybon
Collection museum will contain the only known example of a Fire
Sceptre from the ruins of Iconia Primus. In 2372, a renegade group
of Jem'Hadar will discover a non-operational Iconian gateway on
Vandros IV in the Gamma Quadrant [TNG 137, GN 13, TNG #39, DSN 496].

197,629 B.C.
The massive metal door shielding the Central Node on the Borg
homeworld is sealed [GN 22].

197,625 B.C.
In the Delta Quadrant, a bio-plasmic starship-eating organism is born
[V 208].

170,236 B.C.
The Meztorien civilization arises [TOS #65].

150,000 B.C.
Rigel A begins to show signs of instability. The alarmed
Rigellians delve into their past to rediscover the technology used
by the Masters and rejuvenate their sun. They succeed in draining
Rigel of its helium ash and replenishing its hydrogen. Rigel
may burn for another million years without tampering [FASA].

147,629 B.C.
The Alcawellians discover how to easily cross the boundaries of alternate
universe timelines where the Alcawellians never evolved, and begin to
colonize them. The Second Exodus and the desertation of Alcawell begins.
In 150,000 years, Alcawell will be uninhabited in this timeline and there
will be an estimate of over two hundred billion Alcawellians occupying
over 8 million alternate timelines [V #2].

102,700 B.C.
Interstellar war breaks out between the satanic Furies, rulers of the
Alpha Quadrant civilizations, and the insectoid "Unclean" viroids. The
Unclean will sweep across the 217 million systems known and mapped by the
Furies, immune to the Furies' terror-projection weaponry. Taken by
surprise, the host (666 separate races bound together into a single
people) are driven first from the planets at the galactic rim (suggesting
that the Unclean hail from outside the galaxy). The war will rage for
100,000 years [V #9].