They are called index fossils, an aid to relative dating of rock.
d) body fossils
Index Fossils
Index Fossils.
If by major landmasses is meaning continents, then there are 7 major continents.
there are different periods in each era. In the Cenozoic era, there are 2 periods, Quaternary and Tertiary. Mesozoic era has 3 periods, Cretaceous, Jurassic, and Triassic. Paleozoic has 7 periods, Permian, Carboniferous, Devonian, Silurian, Ordovician, and Cambrian. Precambrian is just the present, no time periods in it.
Most of the periods of the Paleozoic Era are named after the areas in which examples of the rocks of those periods were first described or are plentiful.
Long periods of low precipitation are called "drought".
Long periods of unusually low precipitation are called droughts.
It is index fossils.
yes
Index Fossil
Small ones.
are the remains of specics that existed on rath for short periods of time are the remains of specics that existed on rath for short periods of time the REAL defintion: a fossil known to have lived in a paritcular geologic age that can be used to date rock layer in which is found
If you have someone, the relationship exists at the current time. If you had someone, the relationship used to exist but no longer does. (If you have had someone, the relationship existed for a period or for periods in the past. If you had had someone, the relationship existed for a period or for periods in the past but ended at some point in the past.)
Pangea existed in the Pennsylvanian, Permian, Triassic, and Jurassic periods of geologic time.
No; only a small number of their leaders, and those usually only for relatively short periods.
A Pterodactyl (or Pterosaur) is not actually a dinosaur, but a winged reptile that existed alongside the dinosaurs from the late Triassic to the Cretaceous Periods.
Stegosaurus never lived with tyrannosaurus Rex due to their different periods of existence.
To the extent that science existed during the age of enlightenment it was accepted more than in earlier periods.
Continental climate, this means: Relatively warm summers (20-30°C), and relatively cold winters (below 0°C) with snow. Transition periods (spring and fall) exist.