Geological Time Scales
Terms
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- What is 570 Ma and earlier?
- Precambrian time
- What is the period 190 Ma to 570Ma?
- The Paleozoic Era.
- What is the period 65 Ma to 190 Ma?
- The Mesozoic Era
- What is the time period from the present to 65 Ma?
- The Cenozoic Era
- The Latin suffix "-zoic" means...?
- life
- The time between the present and 1.5 Ma is known as
- The Quaternary Period
- 1.5 Ma to 65 Ma
- the Tertiary Period
- From 65 Ma to 136 Ma is...?
- the Cretaceous Period
- The time from 136 Ma to 190 Ma is...?
- the Jurassic Period
- The Cenozoic Era consists of which two periods?
- the Quaternary and Tertiary Periods
- The Cretaceous and Jurassic Periods comprise which geologic era?
- the Mesozoic Era
- 190-225 Ma ?
- the Triassic Period
- 225 - 280 Ma ?
- the Permian Period
- the Pennsylvanian Period
- from 280 Ma to 320 Ma
- 320 to 345 Ma ?
- the Mississippian Period
- the Devonian Period
- 345 to 395 Ma
- the Silurian Period
- 395 to 430 Ma
- 430 to 500 Ma ?
- the Ordovician Period
- the Cambrian Period
- 500 to 570 Ma
- Age of oldest dated rocks
- at least 3.5 Ba
- The Quaternary Period is comprised of these two Epochs
- the Recent and Pleistocene Epochs
- the epoch between the present and 0.01 Ma
- the Recent Epoch
- the Pleistocene Epoch time period
- 0.01 Ma to 1.5 Ma
- The rise and dominance of humans occurred in these epochs
- the Recent and Pleistocene Epochs
- The Upper Tertiary Period is comprised of these two Epochs
- The Pliocene and the Miocene Epochs
- Modern animals and plants were common during this time period
- the upper Tertiary Period
- The Medieval Latin name for WALES
- Cambria
- The Cenozoic Era is what percent of the earth's age?
- 2%
- The Oligocene, Eocene and Paleocene Epochs combine to form which time period?
- the lower Tertiary Period
- The Pliocene Epoch time period is...?
- 1.5 Ma to 7 Ma
- 7 to 26 Ma
- the Miocene Epoch
- The Oligocene Epoch
- 26 to 38 Ma
- 38 to 54 Ma
- the Eocene Epoch
- The time period of the Paleocene Epoch
- 54 to 65 Ma
- 5% of Earth's history is which Era?
- the Mesozoic Era
- Modern mammals, insects and plants developed during this time period
- the lower Tertiary Period
- The Paleozoic is to Earth's Age as 9 is to...?
- 100
- The Tertiary Period endured for about...?
- 65 My
- The Cretaceous lasted for about...?
- 75 My
- Primitive mammals, the last dinosaurs and the last ammonites lived during this period:
- the upper Cretaceous
- During the Lower Cretaceous period these plants arose:
- flowers
- The first birds and mammals arose during this 45 My period:
- the Jurassic Period
- The 75 My period known as the Carboniferous is comprised of these two periods:
- the Pennsylvanian and Mississippian Periods
- The Precambrian time is further divided into these two era
- the Proterozoic and Archeozoic Era
- The first signs of life and Algae occurred during this era
- the Proterozoic Era
- Precambrian time is about how many years long?
- 3,000 My
- Trilobites evolved during this 50 My time period:
- the Cambrian
- The Cambrian period included the evolution of the first ? invertebrates.
- marine
- Currently, the oldest known rocks in the world come from the...?
- Acasta area of Canada's Northwest Territories.
- The age of the oldest currently known rocks
- 4041 +/- 12 Ma
- Trilobites first appeared during the ? and had their climax in the ?
- Cambrian and Ordovician
- Trilobites existed for a period of about how many years?
- 120 My
- Many marine invertebrates including fish appeared during the time period known as the...?
- Ordovician
- The Silurian period was characterised by these widespread reefs
- coral
- The first land life including scorpions occurred during this period
- the Silurian
- Lungfish appeared during the
- Silurian Period
- The first traces of land life occurred during this period
- the Silurian
- First amphibians and land snails
- the Devonian
- Primitive land plants appear
- the Devonian
- A marine animal having a bivalve shell and a pair of appendages coming out of the sides of its mouth
- Brachiopod
- The Greek prefix "brachio-" means
- of the arm
- The climax of the Brachiopods occurred when?
- The Devonian
- Primitive ammonites appeared
- the Mississippian
- Climax of shell crushing sharks
- the Mississippian
- The first reptiles appear
- the Pennsylvanian
- A time of amphibians, primitive insects, seed ferns and primitive conifers
- the Pennsylvanian
- Rise of reptiles. Modern insects. Last of many plant and animal groups.
- the Permian
- The rise of dinosaurs, cycadlike plants and boney fishes
- the Triassic
- Primitive, seed-bearing, mostly tropical plants of fernlike or palmlike appearance
- cycads
- First birds, first mammals. Diversification of reptiles; climax of ammonites; coniferous trees
- the Jurassic
- The rise of flowering plants
- the lower Cretaceous
- Primitive mammals; last dinosaurs; last ammonites
- the upper Cretaceous
- Rapid development of modern mammals, insects and plants
- the lower Tertiary
- Modern animals and plants
- the upper Tertiary
- The rise and dominance of humans
- the Recent
- The latin-based adjective meaning "consisting of four" or "fourth in order"
- "quaternary" from "quaterni"="by fours"
- The Greek words "kainos"="new" and "zoe"="life" combine to form this word
- cenozoic
- The Latin word "tertius"="third" is the basis for this word
- tertiary
- The glacial epoch of northern Asia, Europe and N. America
- the Pleistocene
- The Greek words "pleistos"="most" and "kainos"="recent" combine to form this word
- pleistocene
-
Gk. pleion=more
+kainos=new
when combined =? - pliocene
- The Gk. (meion=less) + (kainos=recent) =?
- miocene
- Gk. (oligos=few)+(kainos=new,recent)=?
- oligocene
- Gk (eos=dawn,daybreak)+(kainos=new,recent)=?
- eocene
- Gk. (palaios=old,ancient)+(kainos=new,recent)=?
- paleocene
- A mediterranean island where large amounts of chalk occurred
- Crete
- The L. Creta=Crete gave rise to this adjective
- cretaceous=chalklike
- The plural of L. jus=law is jura, which inspired which name for an arc of mountains spanning the Swiss-Franco border?
- the Jura Mountains
- The earliest of the three periods comprised by the Mesozoic era
- the Triassic
- Gk treis=three is basis for the name for which geological period?
- the Triassic
- The former E. Russian province "Perm" forms the name-base for which geoperiod?
- the Permian
- The rocks and fossils first found in SW England at Devon inspired the name of this geoperiod
- the Devonian
- The pre-Celtic people of ancient SE Wales
- the Silures (as adj. = silurian)
- An ancient Celtic tribe of Wales
- The Ordovices (<L)
- The Jurassic Period is named after...?
- The Jura Mountains in present-day Swizterland