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The earliest animal fossils where rather modern-looking cnidarians, possibly from around 580 millionyears ago. They've been around for a long time!
The earliest animal fossils where rather modern-looking cnidarians, possibly from around 580 millionyears ago. They've been around for a long time!
They are present in fossils form since Cambrian times , and were present in Proterozoic Era .
What else can I help you with?
Are cnidarians arthropods?
Cnidarians and Sponges are invertebrates
When was Mars first sighted?
No one knows, for as long as people have been on the earth it has been there in the sky.
How long have hippos been around?
hippos bean around earth
Are Cnidarians protists?
No, cnidarians are not protists. Cnidarians are a diverse group of animals that include jellyfish, corals, and sea anemones. Protists are a separate group of eukaryotic organisms that are not classified as animals.
Which system is more advanced in cnidarians than in porifera?
The nervous system. Cnidarians have a neural net, but porifera do not.
How long has archaebacteria been on earth?
how long has archaebacteria been on earth? how long has archaebacteria been on earth?
How long have mice been on this earth?
they have been on the earth for along time
What are two types of cnidarians that are formed by colonies?
small cnidarians and big cnidarians
How long have frogs been on the earth?
They have been on earth since 190 million years ago.
What is the family for cnidarians?
The cnidarians are in the Kindom family
Do cnidarians have nerves?
cnidarians have no nervous system
Is a cnidarians invertebrates?
Yes, cnidarians are invertebrates.
How long have winged insects been on earth?
long time
How long has the surface on earth been changing?
for as long as it has had continents
How long has chimpanzees been on Earth?
A very long time.
How long have as you have been on the world?
i have been on this earth for 8 years
How long has light from other stars been traveling toward earth?
Well it depends on what you mean. The distance for how long it takes, or the time as in how long since Earth was made. Earth as you know has been here a long long time. Stars light has been shinning towards Earth eversince it was made. To see how long it takes for a stars light to reach Earth depends on how distant and huge the star is.
