Early mutations and new body plans

[swamidass (S. Joshua Swamidass)]

That is the question @Faizal_Ali.

For example, are these new body plans? If not, could they become new body plans?

@swamidass

To reiterate:

1. Very genetically different from other clades.
2. Very genetically similar to one another.
3. Very phenotypically different from one another.