All invertebrates except Porifera possess nervous system .
The evolutionary order of invertebrate phyla are sponges, cniderians, and bilaterians. The origin of invertebrate phyla begin in the Precambrian times.
There are many phyla of invertebrates. Please click on the related link below to see an article that lists the invertebrate phyla.
There are differences within the different phyla (sub-order) of invertebra but they all differ from vertebrae in the lack of cerebialization, they lack one brain. Some phyla like mollusks have pair masses of neurons termed ganglia that handle different functions, like eating or movement.
phylum mollusca
Platyhelminthes
the order of the phyla are porifera,annelida Cnidaria,and Echinodermata and many more.
yo mama is such a whale they needed to give her a brain to move
There are more than two phyla in the animal kingdom... There are many phyla in the animal kingdom. There are a few phyla of worms and other invertebrates and then you have the vertebrate ohyla. Unless that's what your asking? Did you want the invertebrate and vertebrate in general phyla? That's the only set of 2 things I can think of.
A shrimp actually does not have a brain; being an invertebrate, it has a nervous system which gives commands to the rest of the nerves,
The only common groups for them would be the Doman Eukaryia and the kingdom Animalia, beyond that they are separated into a number of invertebrate phyla; those phyla being every single animal phyla except for Chordata.
Not all animal phyla possess a backbone or true tissues. Additionally, not all animal phyla exhibit bilateral symmetry or segmentation. Some phyla, like sponges, lack specialized organ systems, while others, like cnidarians, have a simple nerve net instead of a centralized nervous system.
All the Chordata have a brain at one end of and central nervous system within a back bone.