Unit 5 - Revision of terms Crossword

Term given to the same rock bed that is continuous and laid down at different times.
Type of correlation that uses zone fossils or assemblages of fossils.
Type of glacial deposit that can be used for chronostratigraphic correlation of rocks.
Geological principles that states that geological processes that have been operating for a long period of time can still be in operation today.
Unit of time that is a sub-division of an era.
Type of dating method that gives specific dates to rock units in Ma.
Type of dating method that puts rocks units in sequential order based on geological principles.
Time taken for half of the unstable parent isotopes to decay into stable daughter atoms.
The name of the volcanic "traps" that could cause the Permo-Triassic mass extinction.
Rare element that can normally be found in meteorites.
Piece of solidified molten rock, normally of dark colour, that is formed due to higher pressure and temperature in the event of a meteorite collision.
The volcanic activity responsible for the formation of the Deccan Traps is associated to one the reasons for this mass extinction.
Name of the super continent that formed in the end of the Permian period.
How many mass extinctions there were in the geological history of our planet?
Name of a sauropod.
Name of a therapod.
Name of an ornithopod.
First known bird-like fossil that is believe to be the evolutionary link between birds and dinosaurs.
Technical name for the wishbone.
Hip bone used to differentiate dinosaurs.
Trace fossils of the stones swallowed by dinosaurs and some birds as part of the digestive track.
Type of eggs that allowed permanent invasion of terrestrial environments.
Creature that lived in both water and land.
Type of suture line that is characterised by smooth curve saddles and frilly lobes.
Delicate tube that connects all chambers of ammonoids.
Type of coiling where the inner coiling is almost covered by the last coil.
Name of ordovician grapolite with two pendent and uniserial stipes composed by simple theca.
Name of the silurian graptolite with one uniserial and scandent stipe.