The Maclurites genus of gastropods lived during the Paleozoic era, particularly during the Silurian and Devonian periods, approximately 419 to 359 million years ago. They were marine organisms that had cone-shaped shells.
The Maclurites fossil is associated with a type of mollusk called Maclurites, believed to be part of the Monoplacophora class of ancient marine animals.
I think it is one year :P
Frequency is the reciprocal of time: or in equation form ----> Frequency= 1/time
Roman Imperialism is a term that was defined in later times than the Roman Empire and it best describes the tendency of the Romans to extend the authority of their state [Imperium Romano] to all neighbour countries/ regions or territories in the same way that all empires did in the past - Sumerian, Assyrian, Babylonian, Persian, Roman, Byzantine, Ottoman, Spanish, Portugese, French, British; currently USA [President G W Bush: who is not with us is against us] and god knows who the next will be.
Usually in the time period April to June of the year.
No, it is not. It is a noun usually meaning a short period of time (with the adjective form momentary).
Something Is Considered Medival When It Came Form The Medival Time Period.
The Jurassic Period followed the Triassic.
Sea stacks form over a long period of time—thousands or even millions of years.
metamorphisis or evolution. evolution is the period of time in which a living organism slowly changes.
Twice.
Pangaea came together over a period of time spanning the Carboniferous and Permian periods. It broke up mostly during the Jurassic period.