Referring Clues

• Long time
• Phanerozoic, for instance
• Waiting period, seemingly
• Long, long time
• One billion years, in geology
• Quite a while
• Age
• Forever, or close to it
• Lots of time
• Interminable time
• A billion years
• One billion years
• Years on end
• Seemingly forever
• Years and years
• Ages
• Time in history
• Centuries and centuries
• Immeasurable period
• Loooong wait
• Many chiliads
• Two or more eras
• Clock watcher's wait, seemingly
• Ages and ages
• No short time
• Period in the earth's history
• Long time to wait
• Many, many years
• Super-long time
• Long period
• It lasts and lasts
• Long stretch
• Time on end
• Many, many moons
• Countless years
• Geologist's measure
• Unit of Time
• Time in a waiting room, seemingly
• Extended period
• Very long stretch
• Group of eras
• Many moons
• Geologic division
• What a waiting time may seem
• Mighty long time
• Series of periods
• Almost forever
• Many eras
• It's quite a stretch
• Waiting time at the motor vehicle bureau, seemingly
• String of periods
• Several eras
• Many millennia
• Forever and a day
• It goes on and on
• Wait at the motor vehicle bureau, say
• It's a big stretch
• Geological span
• Big time
• Span longer than an era
• Exceedingly long time
• Great time
• Just about forever
• Period in history
• Years and years and years
• Largest geological division
• Lot of time
• Seeming eternity
• Slice of history
• Long interval
• Untold millennia
• It keeps going and going ...
• Big time?
• Geological stretch
• Geological period
• A month of Sundays
• Largest division of time, in geology
• 1,000,000,000 years
• One billion years, to an astronomer
• Billion years
• Billion-year stretch
• Really long time
• Forever and a day, seemingly
• Unbelievably long time
• Millennia upon millennia
• Mighty long stretch
• About 1/5th of Earth's existence
• Long time, geologically
• Inconceivable stretch
• A long, long time
• Roughly forever
• Untold centuries
• Time immemorial
• Long time, to a geologist
• Immeasurable period of time
• A million millennia
• Span of epoch proportions?
• Long geological period
• Billion-year span
• Chiliad after chiliad
• Million-millennia period
• Myriad moons
• Mind-boggling time span
• Period too long to measure
• Quite a stretch
• Unimaginable time period
• Time on hold, seemingly
• Very long time
• Geologic time unit
• Big hunk of time
• Tons of time
• Many millenniums
• Lo-o-ong period
• It's made up of many periods
• One million millennia
• Eternity
• One hundred million decades
• Division of geologic time
• Extensive period
• Forever and a day, facetiously
• Looooong time
• Awfully long time
• Long stretch of time
• Unit in astronomy
• Gigayear
• Endless years
• It's a real stretch
• It seemingly never ends
• Half a million bimillennia
• It might be divided into eras
• It's over thirty quadrillion seconds long
• Millions of moons
• Vast time frame
• Huge stretch
• Astronomical time period
• It lasts between four and five galactic years
• Geologist's time period
• Seemingly endless time
• It can be subdivided into periods
• Geologic time period
• Astronomer's time period
• Proterozoic, for one
• Big stretch
• Dog's age
• Extremely long time
• Near eternity
• 10 megacenturies
• Umpteen millennia
• Generations
• Annoying wait, facetiously
• Very long interval
• Interminably long time
• Waiting period, it sometimes seems
• Many many years
• Long period of time
• Real long spell
• Lengthy stretch
• Long time division
• A billion years, to Hubble
• Geologic period
• Forever, facetiously
• Many ages
• Considerable stretch
• Quite a spell
• A looooong time
• Unimaginably long time
• Prolonged period
• Billion-year period
• It's longer than an era
• Time without end
• Long geological stretch
• A billion years, in geology
• A billion years, to geologists
• Longest division of geological time
• Vast timeframe
• Billion-year time period
• Vast time period
• Long geological time
• Longest time
• One billion years, in astronomy
• Many, many millennia
• Indefinable time period
• Long geological time period
• L-o-n-g time period
• Two or more eras, in geology
• Geological duration
• L-o-n-g stretch of time
• Geological time period
• Astronomically long time
• Humongous span
• 1,000,000,000 years, in geology
• Endless time
• One billion years, in geologic time
• L-o-n-g time
• Geology period
• Indefinable time
• Immeasurably long period of time
• Geological time
• It's comprised of ages and ages
• Extremely long time period
• 365 billion days, in astronomy
• Amazingly long time
• Time measured in ages
• The longest time?
• About 525 trillion minutes, in astronomy
• Uncountable years
• Astronomical time span
• Longest division of geologic time
• Years and years on end
• 365 billion days, geologically
• Big stretch?
• Ten megacenturies
• Almost an eternity
• Long geological span
• Two or more eras, in geologic time
• One billion years, geologically
• Quite a long time
• It takes forever
• Many milleniums
• Vast time unit
• Longest division of geological time
• It may be after lunch
• A lo-o-ong time
• Big time for crosswords?
• Stretch of history
• Incite
• Almost eternity
• Long historical episode
• Inordinately long time
• Forever, more or less
• About a billion years
• Supernatural being
• Spiritual being
• Division of geological time
• Time period
• Long long time
• A bazillion jillion years
• Long time, even in the singular
• Quite a span
• One billion years
• Largest geologic time division
• Geological time division
• Thousands of generations
• Lunch ending
• Untold years
• Longest division of time, in geology
• Astronomical stretch
• Many millenia
• Longest time span, geologically
• Long, long, long time period
• Geologic age
• Long, long time
• Ton of time
• Quite some time
• A long time
• Lo-o-ong time
• Interminable stretch
• Near-eternity
• A really long time
• Oodles of time
• 1 billion years
• A very long time
• Years and years and years and ...
• Nonspecific duration
• Vast expanse of time
• Long stretch of history
• Era after era
• Nearly an eternity
• Vast age
• Umpteen years
• Era upon era
• Long time-
• Extremely long stretch
• Countless years on end
• Practically forever
• Megayears
• Millennia on end
• Huge time stretch
• Lengthy time unit
• Centuries on end
• Very, very long time
• DMV wait time, seemingly
• A billion years, in astronomy
• An extremely long period of time
• Geologic-time measurement
• A frickin' long time
• Very long time period
• Extremely long unit of time
• Vast span
• ... and another
• Incalculably long time
• Many a DMV wait, seemingly
• More than two eras
• The Hadean was the first one, ending about 4 billion years ago
• Eternity, seemingly
• Lengthy time
• Millions of years
• Immeasurably long time
• Really long geological time
• Time it seemingly takes to get a tax refund
• Lo-o-o-ong time
• Prehistoric period
• It may seem like an eternity
• Chunk of eternity
• History unit
• Impatient person's wait, seemingly
• Lengthy interval
• Basically forever
• Period of many years
• Huge time span
• Vast stretch
• Lunch add-on?
• Plenty of time?
• Geologic span
• Nearly forever
• Long geologic time division
• Nearly infinite perioD
• Many a doctor's office wait, seemingly
• Awfully long stretch
• Immense interval
• Twenty bajillion years
• Boundless time
• Incredibly long time
• Millions of lifetimes
• Major time span
• Great geological time span
• Quasi-opposite of "flash"
• Proterozoic ___
• Enormous span
• Geologist's unit
• Immense time span
• Very long period
• Length of a boring class, so it seems
• Awfully long span
• James Bond film production company
• Many years
• Ages and ages, collectively
• Longish span
• Forever, seemingly
• Geological time unit
• Geochronological span
• Century upon century
• Extended period of time
• 100,000,000 decades
• Many millennia make one
• Enormous stretch
• Frustrating waiting time, facetiously
• Very long span
• We live in the Phanerozoic
• Fathomless time
• Clock-watcher's wait, seemingly
• The Hadean was the earth's first one
• Geological division
• Scads of centuries
• Seemingly impossible time
• Huge time unit
• Its make-up is many years
• Extremely long geologic division
• Countless centuries
• Geologic time division
• It's been a long time
• Word found in "time on end," appropriately
• Myriad years
• Time out of mind
• Gazillion years
• Myriad eras
• Time spent on hold, e.g.
• Numerous centuries
• Quite a long while
• Long, long, long time
• See 41 Down
• Hard-to-imagine period
• Untold eras
• Geologist's division
• Near-infinite time span
• Vast time span
• Great spell
• Really big stretch
• A thousand million years
• Very long spell
• Extended stretch
• Long while
• Long time period
• 365 billion days
• Billion years, in astronomy
• Length of a long wait, in hyperbole
• Time it takes for paint to dry, seemingly
• Far too many years to count
• 1 billion years, in astronomy
• Unspecific duration
• Big chunk of time
• Waiting time at the DMV, seemingly
• Thousands of years
• Long series of periods
• Mega-years
• Geologic time
• Vast time
• Timespan
• Epoch
• Lengthy time period
• Long, long time period
• A zillion years
• Longest length of time
• Very long time span
• Very long stretch of time
• Reallllly long time
• Kind of period
• Indefinitely long time
• It's going to be quite a while
• Phanerozoic, currently
• 365 billion days, astronomically
• It's split into eras
• Reeeeeeally long time
• A dog's age?
• Mind-boggling time
• One billion years equal one
• Simpler spelling of 34-Down
• Reeeeeally long time
• ___ Productions ("Skyfall" company)
• A gazillion years, seemingly
• Very, very long time, in geology
• Seemingly endless span
• Vast time period of 1 billion years
• 12,000,000,000 months
• Extensive geological time
• Very long Supergrass song?
• How great age changes one!
• The age of galleons
• Time to get ahead with new heart
• Geological age
• One crazy time!
• How time changes one
• Age of the neo Nazis?
• Interminable wait
• Time one changed
• One form of eternity
• Long time stretch
• DMV wait, seemingly
• Cosmological stretch
• Time enough to evolve a little
• Spectacular span
• Largest division of geologic time
• Large timeline segment
• Indefinitely long period
• One thousand million years
• Immense period
• Immense period of time
• Number of eras
• Universal age
• Age, epoch
• One alters with age
• Seemingly infinite period of time
• At least two geological eras
• Geologist's time frame
• Era
• Billion-year time span
• Big stretch of time
• Unimaginably long period of time
• Long span
• Last hour of the workday, seemingly
• Lo-o-ong stretch
• Extremely extended stretch
• L-o-o-n-g time
• Vast timespan
• For starters, eat oysters? Never in a thousand million years
• Two or more eras of geological time
• Cosmologist's time unit
• One million years
• Division in geology
• Measure of geologic time
• Millennium
• Vast geological time
• Plenty of time for English cricket side
• Period of time
• Vast period
• Really, really long time
• Long division?
• A lot more than a minute
• Immeasurable stretch
• One terribly long time!
• End of lunch?
• Period of unspecified duration
• Loooooooong time
• Longer than an era
• Long timespan
• Hadean, for example
• A long time making one change
• Phanerozoic, for one
• Long, long stretch
• One transformed in time
• Geological time span
• Series of ages
• Unfathomably long time
• Loooong time
• Lots and lots of time
• A really great time
• Time between ordering and food arriving, seemingly
• Phanerozoic ___ (current period in the earth's history)
• The Phanerozoic, e.g., in geology
• Period longer than a 12-Down
• Many, many centuries
• Geologic time measure
• Huge timespan
• One has the makings of a great time
• Collection of eras
• -
• It takes a long time to change one
• Massive span
• Long time span
• Word that's sometimes an exaggeration
• Long unit of time
• Geologist’s time unit
• A billion years, as a unit
• Geological time measure
• Time period hidden in "Come on, man!"
• Geological span of 1 billion years
• Notedly advance age
• Section of geological history
• Incredibly long geological span
• Geological span of many, many years
• A real long time
• Geologic time span
• It's a stretch
• Hyperbolic wait time
• Length of time spent on hold, it often seems
• Long time to wait, facetiously
• Age of galleons
• Time period of 1 billion years
• It's quite a long time
• Now we're in the Phanerozoic one
• Quite a stretch?
• Loads of lifetimes
• Ages, multiplied
• How long it might take for a mountain to form
• Period of a billion years
• The Phanerozoic, e.g.
• Geological time of a billion years
• Dog's age, so to speak
• Long run?
• Stretch of time
• Geology interval
• Time period, or an anagram of one?
• ___ Productions (company behind the James Bond films)
• Seemingly for-ev-er
• Geologic timespan
• Age of the Odeon
• A gazillion years
• Substantial period of time
• Very long timespan
• Stretch longer than an 11-Across
• Phanerozoic ___ (what we live in)
• Wildly long time
• Extra-long time period
• Seemingly endless amount of time
• Long division
• Very long period of time
• Countless lifetimes
• Phanerozoic ___
• Long span of time
• Proterozoic or Hadean
• Many lifetimes
• Long geologic span
• Over time period?
• Extra-long time
• Age of the neo Nazis?
• Unit of time often used hyperbolically
• Proterozoic, e.g.
• Ages upon ages
• Seemingly endless time span
• Unit of time equal to one million millennia
• It totals 1 billion years
• One of four in Earth's history
• Major stretch of time
• Super-long time span
• Reaaaaally long time
• Forever, figuratively
• One changes in time
• Looong time
• Time to show a way ahead
• Equivalent of a billion years, in geology
• Really long time span
• Long spell
• Unimaginable span
• The Proterozoic, e.g.
• Impossibly long stretch
• Time unit aptly hidden in "paleontology"
• It literally takes ages
• 1,000,000,000 years, in astronomy
• It's one for the history books