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How did geologists determine the division of the geologic time scale?
Geologists determined the division of the geologic time scale through the study of rock layers and the fossils contained within them. By examining the different types of fossils and their distribution in the rock record, geologists were able to identify distinct time periods based on changes in the Earth's environment and the evolution of life forms. This process of relative dating helped establish the framework for the geologic time scale.
What came first crocodiles or sharks?
Sharks existed at the same time dinosaurs did. Sharks pre-date the dinosaurs by quite a bit. To get from sharks to dinosaurs: sharks - bony fish - lobe finned fish - lung fish - amphibians - reptiles - dinosaurs.
What is the Mesozoic era often called?
The Mesozoic era is often referred to as the "Age of Reptiles" due to the dominance of reptiles, including dinosaurs, during this time period.
What is called the record of life forms and geologic events in earth's history?
the record of life forms and geologic events in earth's history is actually called the "Geologic time scale" fine sir. good day
Do marine reptiles breath underwater?
No. All reptiles, both on land and in water, must breath air. Marine reptiles can hold their breath from a considerable time, but must surface to breathe once in a while.
Middle division of geologic time?
Period.
What is the smallest division of geologic what time?
epoch
What word represents the broadest division on a geologic time scale?
Eon is the broadest division on the geologic time scale, representing the longest time span. Eons are further divided into eras, which are then subdivided into periods, epochs, and ages.
What is the third largest division of geologic time?
The third largest division of geologic time is an era. The eras are further divided into periods, epochs, and ages.
Which is the smallest division of time on the geologic scale?
Epoch
What is the name of the largest division of geologic time?
Eon
What is the next smaller division of geologic time after era?
After an era, the next smallest division of time would be an epoch. An epoch is equal to around 10,000,000 years, where as an era is 100,000,000 years.
Which major division on geologic time came first?
Precambrian time
What division in the geologic time scale is the shortest?
The shortest division in the geologic time scale is an Epoch. Epochs are subdivisions of a period and are typically tens of millions of years long.
Was a rattlesnake one of the first reptiles?
No, rattlesnakes are a fairly recent family of reptiles to develop, at least when one looks at geologic time.
What is a long span of geologic time called?
A long span of geologic time is called an era. This is a major division of geologic time that is further subdivided into periods. Examples of eras include the Paleozoic, Mesozoic, and Cenozoic.
What is the largest division on the geologic time scale is?
an era uhm NO ^ an eon . (apex)
