Define a node based name for a group that includes humans an

Define a node based name for a group that includes humans and lampreys but excludes Urochordata (note that this question is not asking for the actual name of this group—i.e., Craniata/Vertebrata—but rather for you to come up with a node-based definition of this name). Also define a stem-based name for this group.

Solution

A chordate with a brain known as Euchordata. A stem based name for this group is Pan euchordata, an example of which is yunnanozzon.

Reference

1. Cracraft, J., & Donoghue, M, J. (2004). Assembling the tree of life. New york: Oxford university press