Most ancient species exists?

[TicaL]

What petstore in san diego has one? I would like to see that.

The one that sells Jackalope

 

[MistirE]

...

 

[Fishes33]

Isnt Crocodile the most ancient that ever live on earth? ^^;;

 

[cockroach]

Oh so THATs what was in your avatar... I thought they were bettas!!

ewurm dont let them mock that beautiful guppy in your avatar , I like it! lol

 

[syddakyd]

wait lancelets aren't fish they are "fish-like" though. i read about them a few years ago as weird animals interest me (tuatara, caecilians, etc.)

anyways. that animal is said to be the closest gap between inverts and vertabrates, right?

 

[angeltc]

We're gonna need a bigger boat

Lol but seriously. What is that thing?

 

[Thedaniokeeper]

That you can put in an aquarium, oldest thing is horseshoe crab. Trilobites have been around 700+ million years.
Wait... i am wrong here. Green algae.
Others are right about true fish.

 

[Jeox]

Isnt Crocodile the most ancient that ever live on earth? ^^;;

Nope.
there are things around today, that were around 200 million years+ before the first crocodiles.

EDIT
Somehow i missed how old this thread is. :\

 

[Phleborrhagia]

Superclass Osteichthyes
Class Sarcopterygii
Order Lepidosireniformes and Order Coelacanthiformes

 

[hihi]

aro ftw