Since the non-avian dinosaurs
The interval since the non-avian dinosaurs marks the time since these dinosaurs disappeared from Earth.
How big is it?
66 Myr · time
Time · reference interval
A little perspective
Since the non-avian dinosaurs vs Earth: duration comparison
The age of Earth is about 68.8 times the time since the extinction of the non-avian dinosaurs.
ELAPSED TIME
The interval since the non-avian dinosaurs marks the time since these dinosaurs disappeared from Earth.
Measurements, assumptions & sources +
Since the non-avian dinosaurs
Time: 66 Myr; reference interval.
A rounded 66 million-year geological interval.
Defined examples — our methodology
The marked time is calibrated. Unmeasured illustration details are representative.
Earth
Age: 4.54 Gyr; rounded geological anchor.
Mean-radius spherical model for Earth; actual shape is not perfectly spherical.
Defined examples — our methodology
The marked age is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 66 Myr
We compare the time since the extinction of the non-avian dinosaurs. The measurement is labelled reference interval. Check the source notes for its basis.
A rounded 66 million-year geological interval.
The picture identifies the subject; the diagram compares the recorded values. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 66 Myr | Not recorded | reference interval |
Around this scale
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Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valueTime and durationRecorded-history interval5 kyrTimeThe recorded-history interval is the span for which humans have kept written or documented records.
Nearest higher valueTime and durationAge of Earth4.54 GyrTimeThe age of Earth is the time that has passed since the planet formed from the solar nebula.Sources and method
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Follow your curiosity.
TimeBlink of an eye150 msA blink of an eye is the quick closing and opening of the eyelid, usually happening involuntarily.TimeHuman lifetime80 yearsA human lifetime is the span from a person's birth to their death.TimeAge of Earth4.54 GyrThe age of Earth is the time that has passed since the planet formed from the solar nebula.TimeAge of the universe13.8 GyrThe age of the universe is the time since the Big Bang, marking the beginning of cosmic expansion.
SpaceEarth12,740 kmEarth is the rocky planet on which we live and the third planet from the Sun.
SpaceObservable universe28.21 GpcThe observable universe is the region from which light or other signals have had time to reach us since the early universe.TimeRecorded-history interval5 kyrThe recorded-history interval is the span for which humans have kept written or documented records.TimeA century100 yearsA century is a period of one hundred years.