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i thank how long a organism live make's it good or bad.
note- this information is taken from internet. I'm not sure if it's a perfect answer.
by choudhary waqas midwood hs 2011
What else can I help you with?
When did organisms that formed index fossils?
Organisms that formed index fossils existed during specific time periods in Earth's history. These organisms lived in abundance, had a widespread distribution, and have distinctive features that make them easy to identify in the fossil record. By studying these index fossils, scientists can determine the relative age of the rocks in which they are found.
Which fossil organisms could possibly be used as index (guide) fossils?
Index fossils are typically species that were widespread, abundant, and existed for a relatively short geological time period. Examples include trilobites, ammonites, and certain species of brachiopods or foraminifera. These organisms help geologists and paleontologists correlate the age of rock layers across different regions. Their distinctive features and rapid evolutionary changes make them reliable indicators of specific geological time frames.
Why would polar bears not make good index fossils?
Polar bears would not make good index fossils because they have a relatively short geological lifespan, as they only evolved around 500,000 years ago. Additionally, their limited habitat in the Arctic makes them less widespread compared to organisms that thrived in diverse environments. For a fossil to be considered a good index fossil, it should represent a species that existed over a broad time frame and across various locations, which polar bears do not.
How do people make fossils?
People don't make fossils. Fossils are remains of or the impressions of organisms which were once alive. You can find fossils if you look at the right rocks, you can split the right rock and see the fossils inside. You can also clean pieces of rock from around the fossil to show more detail, but you don't make them.
What 3 criteria do fossils have to meet un order to be considered an index fossils?
To be considered index fossils, fossils must meet three key criteria: they should have a wide geographic distribution, indicating that the species existed over a broad area; they must be limited to a short time range in the geologic record, allowing for precise dating of rock layers; and they should be easily recognizable and distinctive, facilitating identification. These characteristics make index fossils valuable for correlating and dating geological formations.
Would teuthid fossils make good index fossils?
Depends on the type of eurypterid. In short, no; we don't know enough about them to say that they are only found in certain time zones.
What 3 requirements do index fossils have?
To be an index fossil, it must be widespread, commonly found (sometimes in groups) and have a short life span for which it lived. If a fossil meets all three of these requirements, it is considered an index fossil.
Why Are Ammonites Classified As Index Fossils?
Ammonites are classified as index fossils because they were widespread, existed for relatively short geological periods, and exhibit rapid evolutionary changes. Their distinctive and varied shell shapes make them easily recognizable in the fossil record. This allows geologists to correlate the ages of rock layers across different geographic locations based on the presence of specific ammonite species, aiding in relative dating. Their use as index fossils is crucial for understanding the timing of geological events and the evolution of life on Earth.
What index fossils were around during the ordovician period?
During the Ordovician period, several key index fossils were present, including trilobites like Asaphus and Flexicalymene, brachiopods such as Orthida and Strophomena, and graptolites like Didymograptus. These fossils are significant because they help geologists identify and correlate Ordovician rock layers across different regions. Their widespread distribution and rapid evolution make them excellent indicators of the period's marine environments.
Why don't igneous rocks rock contain fossils?
because igneous rock forms when maga cools and the organisms can not survive the intense heat. they can only make an imprint on it.
What are the characteristics of a good index fossi?
A good index fossil possesses several key characteristics: it should be widely distributed geographically, allowing it to be found in various locations; it must have a short geological time range, helping to date the rock layers accurately; and it should be easily recognizable, with distinct features that differentiate it from other fossils. Additionally, it should be abundant in the sedimentary record to ensure its presence in multiple strata. These traits make index fossils valuable for correlating geological formations and determining the relative ages of rock layers.
How do you make fossils in rock?
You cant. Fossils are made when a volcano erupts and then when the magma cools, you can make a print in it.
