Spinosaurus was thought to have lived from 106 to 93.6 Million years ago.
This was in the Albian Age(112 - 99.6Ma) and Cenomanian Age(99.6 - 93.6Ma) of the Cretaceous Period(145.5 - 65.5Ma).
They spanned the end of the Lower Cretaceous Epoch(145.5 - 99.6Ma) and the start of the Upper Cretaceous Epoch(99.6 - 65.5Ma). This was in the Mesozoic Era(251 - 65.5Ma) which was part of the Phanerozoic Eon(542Ma - Now).
Devonian to cretaceous is the the geological age of ammonoids They first appeared during the Devonian Period (approximately 410 million years ago). They almost died out at the end of the Permian Period (251 million years ago), and again at the end of the Triassic Period (205 million years ago). They finally became extinct at the end of the Cretaceous Period (65 million years ago), perhaps as a result of a lowering of ocean levels.
The study of fossils represent the evolution of species by the time period between when they became fossils and what the ancestory line is
Time period = 1 / frequency. Frequency = 1 / time period.
A wave length.
Weather last s mostly long Time for example a snow storm
Cryolophosaurus lived during the Yo Mama period
Cryolophosaurus, from the early Jurassic.
The first dinosaur fossil ever found in Antarctica is called Antarctopelta. Its fossils date to the late Cretaceous period. Cryolophosaurus, the first theropod discovered in Antarctica, date back to the early Jurassic period.
The "polar Allosaurus" is called Cryolophosaurus. Like all dinosaurs, Cryolophosaurus would have laid hard shelled eggs, and the babies would hatch after the eggs incubated for a period of time in the nest.
early life of antartica million of years ago
The geological time scale organizes a long period of time.
IT encompasses all of the geological time period that have happened since the begin of time
False
geological time period ranges between 443-418 ma refer to wikipedia (search with Geological time scale) if u want details about this and rest all the time periods
The Quaternary Period (from 2.59 Million years ago to the present day).
Quaternary.
Name of the period when it wasnt considered part of earths geological