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Phacops was a genus of trilobite that lived in the Devonian Period.

It shared the oceans with

  • the placoderms (armoured fish),
  • orthocone's,
  • the 1st amphibians,
  • the 1st insects (Rhyniognatha hirsti),
  • the 1st Spiders (Attercopus),

and many many more animals

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Why is phacops rana a type of trilobite considered a good index fossil to use to estimate the age of a layer?

Phacops rana is considered a good index fossil because it lived during a specific geological period, primarily the Devonian, which allows geologists to date rock layers accurately. Its widespread distribution and distinctive morphology make it easily recognizable and useful for correlating the ages of different rock formations. Additionally, it existed for a relatively short geological time span, enhancing its effectiveness in identifying and dating specific strata.


What was Robert hooke contrion to the cell theory?

was an english scientist who lived at the same time as vanleeuwenhoek


What could you conclude if a dinosaur fossil and a bird fossil were found in the same layer of rocks?

We would conclude that the bird and the dinosaur lived around the same time.


What layer is most likely to have organisms that lived at the same time as the bear species?

The layer most likely to have organisms that lived at the same time as a specific bear species would be the one corresponding to the same geological time period in which that bear existed. For example, if the bear species is from the Pleistocene epoch, then the associated layer would contain fossils and remains from that epoch, indicating contemporaneous organisms. Typically, this would be a fossil-rich stratum within the same geological formation or sequence.


What type of rock will most likely contain the fossils of animals that once lived in the ocean?

Sedimentary rock is the most likely type of rock to contain fossils of animals that once lived in the ocean. This is because sedimentary rocks form from the accumulation and compaction of sediments, which can entomb and preserve the remains of organisms over time.

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