| The taxonomic rationale for placement at the infraclass level is discussed in Brower. |
|
| In all cases, a representative of the mammalian infraclass Metatheria was designated as an outgroup. |
|
| I'm animal, my phylum is chordata, my subphylum is vertebrate, my class is mammals, sublass theria, infraclass eutheria, within that I'm a primate, and within that I'm human. |
|
| In the Late Cretaceous also appeared the first modern birds, assigned to the infraclass Neornithes, or Carinata. |
|
| The infraclass Holostei includes the orders Semionotiformes, Pycnodontiformes, and Amiiformes. |
|
| A barnacle is a type of arthropod belonging to infraclass Cirripedia in the subphylum Crustacea, and is hence related to crabs and lobsters. |
|
