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Why were there no plants during the Cambrian time era?
There were simple plants in the Cambrian Period(542 - 488.3Ma). Fossil algae has been found in Cambrian Rocks. Evidence of primitive algae from the Precambrian Super-Eon has also been found but exact classification has not been established. It is true that embryophytes (Plants we most recognise) did not evolve until the Ordovician Period(488.3 - 443.7Ma).
Why haven't paleontologists found any rock from the earliest years of Earth's existence?
All rocks were molten in that period of time. **Possible improvement All rocks from before the Cambrian Period have been melted and recrystallised, as far as is known. (Though I don't fancy testing the age of every single rock on earth - do you) In the same way there are no Pre-Cambrian fossils. We have not tested every single fragment on earth, so all evidence is destroyed.
Why are sedimentary rocks found everywhere on the earth?
They are not found everywhere, in some places metamorphic rocks are to be found and in other places igneous rocks are to be found.
Why are fossil fuels found buried in rock?
More accurately they are found buried under rocks, this is because since they were formed, rocks have been formed on top, usually by sediments.
Which type of rock is where fossils are found?
They are mostly found in Sedimentary Rocks
Why were there no plants during the Cambrian time era?
There were simple plants in the Cambrian Period(542 - 488.3Ma). Fossil algae has been found in Cambrian Rocks. Evidence of primitive algae from the Precambrian Super-Eon has also been found but exact classification has not been established. It is true that embryophytes (Plants we most recognise) did not evolve until the Ordovician Period(488.3 - 443.7Ma).
The first fossils of land plants and animals are found in rocks from the?
Cambrian Period Actually the correct answer to this question is the "Pennsylvanian Period".
What hexactinellida can be found in the Cambrian?
Fossil evidence for the Hexactinellid class of sponge actually predates the Cambrian Period. Fossils of the genus Paleophragmodictya is the oldest fossil sponge currently known and was found in rocks dating back to the Ediacaran Period of the Neoproterozoic Era.It is thought that the Extinction events that occured in the early Cambrian effected the early sponges greatly but diversification of Haexactinellida after this brought many new forms. A species of Konyrium has been found in late Cambrian rocks.Many species were to evolve though out the Paleozoic and Mesozoic Era although hexactinellida would not see maximum diversity until the Cretaceous Period.
What is ediacaran?
Ediacaran fauna are the fossil animals found in rocks dated around 650-540 million years ago, just before the Cambrian period.
Which rocks are found in Quebec?
All types of rocks can be found in Quebec. The bulk of Quebec is comprised of the Canadian Shield, containing pre-cambrian age granitic igneous rocks. Basins and plains contain glacially deposited rocks of all types, and the upper reaches of the Appalachian mountains extends into Quebec, consisting of sedimentary strata.
Why haven't paleontologists found any rock from the earliest years of Earth's existence?
All rocks were molten in that period of time. **Possible improvement All rocks from before the Cambrian Period have been melted and recrystallised, as far as is known. (Though I don't fancy testing the age of every single rock on earth - do you) In the same way there are no Pre-Cambrian fossils. We have not tested every single fragment on earth, so all evidence is destroyed.
Far where on the moon have the youngest rocks been found?
The youngest rocks found on the moon are igneous rocks. They are found on the Maria, dark, flat regions on the moon.
What time period are most rocks from in glacier national park?
Most of the rock is pre-Cambrian rock.
From what time period are most of rocks in Glacier National Park?
Most of the rock is pre-Cambrian rock.
Have any dinosaur fossils been found in France or England?
To find dinosaurs, one needs Mesozoic rocks, primarily Jurassic or Cretaceous, the kind that were forming when the dinosaurs were alive. The British Isles (not sure about France, but it is hard by) have almost all older rocks from the Paleozoic. (In fact, several periods - Cambrian, Ordovician, Silurian and Devonian - are named for places or people in Britain.)
What is meant by term Cambrian explosion?
The Cambrian explosion is an apparently sudden increase in fossils marking the separation between Precambrian rocks and Cambrian rocks. At one time this was believed to mark the beginning of multicellular life, but in fact it only marks the evolution of hard body parts (most of which were made of calcium carbonate). It turns out that there were as many multicellular organisms in the late Precambrian as there were during the Cambrian explosion at the beginning of the Cambrian, but the lack of hard body parts in those organisms made the formation of easy to identify fossils of those organisms much rarer.
Has igneous rocks ever been found in Iceland?
yes it can be found in iceland ;]
