0
Why is it important to scientists that many organisms during the Cambrian period had hard parts?
Wiki User
∙ 7y ago
Referred to the Cambrian explosion is the Cambrian period. Shells and exoskeletons had hard parts. The Cambrian period was the first of the Paleozoic Era.
The hard parts made the preservation of their shapes, and sometimes their body cavities, much more easy to recognize as a fossil. The earlier soft bodied organisms required very fine silts for their effective preservation. A representative group they found are the Ediacaran fauna.
Wiki User
∙ 7y ago
Add your answer:
Earn +20 pts
What evolutionary development do scientists think occurred in the Cambrian period that gave rise to more complex fish?
They theorize that during this period the first of three gill arches on a jawless fish evolved into the first jaws.
Is it correct that life evolved in the Cambrian and humans evolved in Africa?
While it is certainly true that life diversified significantly during the Cambrian, it did not originate in the Cambrian, but roughly three billion years before that. And yes, the first populations of anatomically modern humans are thought to have emerged in Africa.
Why did the Ediacara fauna thrive during the Cambrian Period even though they were immobile?
They didn't thrive in the Cambrian, they are very rare and not necessarily the same biologically as the forms in the Precambrian. Soft bodied preservation in the Ediacaran style occurs throughout the Phanerozoic, but becomes increasingly rare after the Cambrian- perhaps due to disturbance of bedding surfaces by metazoans, but there are many other possibilities.
What is the oldest and simplest organism?
Algae or blue green algae
What do scientists do during data collection?
Gather information during an experiment
What is the Cambrian explosion why is it important to the history of life on earth?
During the Cambrian Explosion. life took a great step forward to a world called life. A great number of organisms were evolving all over the world.
In what era did jellyfish evolve?
Jellyfish and other multi-cellullar organisms evolved during the Cambrian era.
Did any organisms evolve or go extinct during the Cambrian time period?
Yes the Cambrian is regarded as the point when life of earth began to flourish (it becomes more visible/common in the fossil record).
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.
What happened during an event called Cambrian Explosion?
The sudden increase in invertebrate fossil diversity
What is the significance of the didvision between the Cambrian and PreCambrian periods?
During the Cambrian period, life began to appear on the planet.
Were there herbivores during the Cambrian time period?
It is thought that most of the animals in the Cambrian Period were herbivores feeding on the Green Algae which we believe was abundant during the Period.
Where were most of the continents during the Cambrian period?
To the Sourthern Hemisphere
What is the cambrain explosion?
life during the early Cambrian period
Was life not very diverse during the Cambrian period?
True.
What phylum was not present during the Cambrian period?
The phylum Cnidaria was not present during the Cambrian period. Cnidarians, which include jellyfish and corals, appeared later in the fossil record during the Ediacaran period and diversified in the subsequent periods.
What is a sentence using the word Cambrian?
This refers to a period of time during the Paleozoic Era. Here are some sentences.The Cambrian Period was the first 65 million years of the Paleozoic Era.Trilobites flourished during the Cambrian.The Cambrian was characterized by warm seas and deserts on land.
