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

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