My Puzzles
Report bug
Collected Puzzles
User listed puzzles
Random Puzzle
Log In/Out

Rock and Fossil Record


No description

permineralization unconfomity that exists between horizontal rock layers and rock layers that are tilted or folded
relative ideal sequence of rock layers that contain all known fossils and rock formations
isotopes "old life"
geologiccolumn type of trace fossil
mold insects are often preserved in this
mummificaiton preserved feces
tarpits four major parts of the geologic time scale
eons the process where an unstable isotope changes into a stable isotope
angular atoms of the same element with different masses
Mesozoic an index fossil
trilobite missing part or gap in the geologic column
fossil most of the fossils of saber-toothed cats are found here
decay object created when a mold is filled with sediments that become rock
uniformitarianism a process in which mineral fill in the pore spaces of an organism's tissue
amber process where organisms do not decay because the bacteria that feeds on the dead organism can't live without water
unconformity principle that states that the younger rock layers lie above older rock layers in undisturbed sequences
index fossil the time it takes for one half of a radioactive sample to decay
Paleozoic era where reptiles dominated
trace trace fossil of shelters made by animals
superposition dating technique that establishes the age of an object
caprolites type of fossil where the animal's acitivity is preserved
Cenozoic priniciple that states that the geological processes that are acting on the Earth today are the same as those that acted upon the Earth in the past
burrows dating technique that uses the principle of superposition to determine if an object or event is older or younger than another object or event
half-life era where mammals dominated
cast fossils of organisms that lived during a relatively short, well defined time period
petrification naturally preserved evidence of life
absolute a cavity in ground where a plant or animal was buried
track occurs when an organism's tissue is completely replaced by minerals

Use the "Printable HTML" button to get a clean page, in either HTML or PDF, that you can use your browser's print button to print. This page won't have buttons or ads, just your puzzle. The PDF format allows the web site to know how large a printer page is, and the fonts are scaled to fill the page. The PDF takes awhile to generate. Don't panic!

Web armoredpenguin.com

Copyright information Privacy information Contact us Blog