Topic2.GeologicalTimeScaleCompiledbyOUQiang(Updated:2013)EarlyLifeEvolutionLab,ChinaUniversityofGeosciences(Beijing) GeochronologicUnits(地质年代单位)ChronostratigraphicUnits(年代地层单位)EonEonothemEraErathemPeriodSystemEpochSeriesAgeStage(宙)(代)(纪)(世)(期)(宇)(界)(系)(统)(阶)DivisionofGeologicTimeand...
Archean, and Proterozoic—which are sometimes known as the Precambrian era. During the Cambrian period—the earliest part of the Phanerozoic—the first complex organisms appeared. Most of them were aquatic; the most famous examples
The Geologic Time Scale is the history of the Earth broken down into four spans of time marked by various events, such as the emergence of certain species, their evolution, and their extinction, that help distinguish one era from another. Strictly speaking,PrecambrianTime is not an actual era ...
geological period,period- a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods" geological era,era- a major division of geological time; an era is usually divided into two or more periods ...
All rights reserved.Interactive TextbookThe History of Life on EarthName Class DateEras of the Geologic Time Scale The began about 542 million years ago. It ended about 251 million years ago. comes from Greek words meaning "ancient life." The Paleozoic era is the second-longest part of the ...
The Cenozoic era also has atertiary periodconsidered by some which have five epochs-Paleocene, Eocene, Oligocene, Miocene, and Pliocene. It was during this era that the vegetation increased and the ape-man appeared. Epochs and Age Subdivision of periods into epochs can be done only for the mo...
What are the 4 major divisions of the time scale from longest to shortest? From longest to shortest, the segments of time areeon, era, period, and epoch. 5. How is the geologic time scale related to the fossil record quizlet?
地质年代表(The geologic timescale).doc,地质年代表(The geologic timescale) Geological year: geological time scale definition: a time scale that measures the intervals between the different periods of the earths history. According to the giant stage of
Decoding the Cenozoic Era Epochs Visualizing the Geologic Time Scale with Diagrams Lesson Summary Register to view this lesson Are you a student or a teacher? What is the order of the geologic time scale? The largest time units on the geologic time scale are the eons. The oldest eon is the...
Mesozoic Era Phanerozoic Eon Lipalian interval See all related content Ask the Chatbot a Question geologic time, theextensiveinterval oftimeoccupied by the geologichistoryofEarth. Formal geologic time begins at the start of theArchean Eon(4.0 billion to 2.5 billion years ago) and continues to the...