UnconformityBreak in timedue to erosionin an otherwisecontinuous rockrecord AbsoluteAgehe exact age therock given asthe number ofyears since therock formedThrinaxodonOne of the firstmammals toexist, hadseveral reptiliancharacteristicsExtinctRefers to agroup of relatedorganisms thathas died out andhas no livingmembers IgneousRockvolcanicrock wherefossils arenot foundCastFossilSolid copy ofthe shape ofan organism EraThe secondlargestdivision ofgeologicaltime PetrifiedFossilWhensedimentreplaces allor part of anorganism stromatolitesFossilizedsingle-celledorganisms thatstill remain theoldest fossils onEarthLaw ofSuperpositionLaw stating thatlower rocklayers are olderand upper rocklayers areyounger FaultA breakin Earth'scrustEonsLongeststretch ofgeologictimePeriodThe secondshortest unitof geologicaltime (behindepochs) SedimentaryRockThe onlytype of rickwhere fossilsare foundCarbonFilmThin film of carbonthat forms as gasesand liquids areforced out of thebody due topressure and heat EvolutionThe changein livingthings overmanygenerations FossilRecordAll the fossilscollected andstudied bypaleontologistsTraceFossilA fossil thatshows theactivities ofancientorganisms PaleontologistA scientistwhostudiesfossilsIntrusionAn igneous rocklayer that formswhen magmahardens beneathEarth’s surface MoldFossilFossilizedimprint insediment inthe shape ofan organism GeologicTimeScaleA record ofthe geologicevents andlife forms inEarth’s history GorgonopsidThe apexpredator of thepermian period;Had mammal-like teethExtrusionAn igneous rocklayer that formswhen lava flowsonto Earth’ssurface andhardens OverturnedFoldsThe onlycase whereyounger rocklayers canend upIndexFossila fossil that isuseful for datingand correlatingthe strata inwhich it is found RelativeAgeThe age ofrocks ascompared toother rocks PreservedRemainsWhen parts ofthe originalorganismremain, likeamber, ice, tar,mummies, etc.FossilRemains orimpression of aprehistoricorganismpreserved inrockUnconformityBreak in timedue to erosionin an otherwisecontinuous rockrecord AbsoluteAgehe exact age therock given asthe number ofyears since therock formedThrinaxodonOne of the firstmammals toexist, hadseveral reptiliancharacteristicsExtinctRefers to agroup of relatedorganisms thathas died out andhas no livingmembers IgneousRockvolcanicrock wherefossils arenot foundCastFossilSolid copy ofthe shape ofan organism EraThe secondlargestdivision ofgeologicaltime PetrifiedFossilWhensedimentreplaces allor part of anorganism stromatolitesFossilizedsingle-celledorganisms thatstill remain theoldest fossils onEarthLaw ofSuperpositionLaw stating thatlower rocklayers are olderand upper rocklayers areyounger FaultA breakin Earth'scrustEonsLongeststretch ofgeologictimePeriodThe secondshortest unitof geologicaltime (behindepochs) SedimentaryRockThe onlytype of rickwhere fossilsare foundCarbonFilmThin film of carbonthat forms as gasesand liquids areforced out of thebody due topressure and heat EvolutionThe changein livingthings overmanygenerations FossilRecordAll the fossilscollected andstudied bypaleontologistsTraceFossilA fossil thatshows theactivities ofancientorganisms PaleontologistA scientistwhostudiesfossilsIntrusionAn igneous rocklayer that formswhen magmahardens beneathEarth’s surface MoldFossilFossilizedimprint insediment inthe shape ofan organism GeologicTimeScaleA record ofthe geologicevents andlife forms inEarth’s history GorgonopsidThe apexpredator of thepermian period;Had mammal-like teethExtrusionAn igneous rocklayer that formswhen lava flowsonto Earth’ssurface andhardens OverturnedFoldsThe onlycase whereyounger rocklayers canend upIndexFossila fossil that isuseful for datingand correlatingthe strata inwhich it is found RelativeAgeThe age ofrocks ascompared toother rocks PreservedRemainsWhen parts ofthe originalorganismremain, likeamber, ice, tar,mummies, etc.FossilRemains orimpression of aprehistoricorganismpreserved inrock

Geologic Time Bingo - Call List

(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.


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  1. Break in time due to erosion in an otherwise continuous rock record
    Unconformity
  2. he exact age the rock given as the number of years since the rock formed
    Absolute Age
  3. One of the first mammals to exist, had several reptilian characteristics
    Thrinaxodon
  4. Refers to a group of related organisms that has died out and has no living members
    Extinct
  5. volcanic rock where fossils are not found
    Igneous Rock
  6. Solid copy of the shape of an organism
    Cast Fossil
  7. The second largest division of geological time
    Era
  8. When sediment replaces all or part of an organism
    Petrified Fossil
  9. Fossilized single-celled organisms that still remain the oldest fossils on Earth
    stromatolites
  10. Law stating that lower rock layers are older and upper rock layers are younger
    Law of Superposition
  11. A break in Earth's crust
    Fault
  12. Longest stretch of geologic time
    Eons
  13. The second shortest unit of geological time (behind epochs)
    Period
  14. The only type of rick where fossils are found
    Sedimentary Rock
  15. Thin film of carbon that forms as gases and liquids are forced out of the body due to pressure and heat
    Carbon Film
  16. The change in living things over many generations
    Evolution
  17. All the fossils collected and studied by paleontologists
    Fossil Record
  18. A fossil that shows the activities of ancient organisms
    Trace Fossil
  19. A scientist who studies fossils
    Paleontologist
  20. An igneous rock layer that forms when magma hardens beneath Earth’s surface
    Intrusion
  21. Fossilized imprint in sediment in the shape of an organism
    Mold Fossil
  22. A record of the geologic events and life forms in Earth’s history
    Geologic Time Scale
  23. The apex predator of the permian period; Had mammal-like teeth
    Gorgonopsid
  24. An igneous rock layer that forms when lava flows onto Earth’s surface and hardens
    Extrusion
  25. The only case where younger rock layers can end up
    Overturned Folds
  26. a fossil that is useful for dating and correlating the strata in which it is found
    Index Fossil
  27. The age of rocks as compared to other rocks
    Relative Age
  28. When parts of the original organism remain, like amber, ice, tar, mummies, etc.
    Preserved Remains
  29. Remains or impression of a prehistoric organism preserved in rock
    Fossil