infraphylum

Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'

Predicate: infraphylum

Indicates a taxonomic relationship where one entity is classified as an infraphylum, a rank directly below a subphylum and above a superclass, within the biological hierarchy of another entity.