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What else can I help you with?
Which time period did eurypterids swim the ocean?
Silurian Period
What are eurypterids?
Eurypterids are ancestors of Dinosaurs.
During which period did eurypterids swim the oceans and the first jawed fish and vascular plants evolve?
Silurian period
What time period where snails introduced on the earth?
The snail was introduced to earth in the Late Cambrien period.
During what time period was the cornucopia introduced?
Ancient Greece
What time period were coins introduced for trading in ancient Greece?
From the 600s BCE.
What are eurypterid dinosaurs?
Eurypterids are ancestors of Dinosaurs.
What are the dominant organisma living at silurian time?
The dominating animals were marine invertebrates,including crinoids and cystiods,mollusks, and eurypterids.
Why are the Eurypterids in these cross sections not useful as index fossils?
The Eurypterids in these cross sections not useful as index fossil because they are only found in certain areas are a long lived organism
Why BC and AD have been introduced?
to let people know if the time period was before or after Jesus Christ.
Why real time system was introduced?
Real time introduce for correct operation, and it required to produce a result within a non-negotiable time period.
What time period were crinoids introduced?
Your use of the word "introduced" suggests that they were added to a specific habitat somewhere. The question cannot be answered without knowing which habitat they were supposed to be introduced to. Crinoids have been around for about 350 million years.
