Definition of infraclass in English:

infraclass

Syllabification: in·fra·class
Pronunciation: /ˈinfrəˌklas
 
/

noun

Biology
A taxonomic category that ranks below a subclass.
More example sentences
  • We performed phylogenetic analyses of introns from species from four avian orders that are representative of the two infraclasses within Aves.
  • Names of infraclasses and cohorts within Neornithes are shown.
  • The taxonomic rationale for placement at the infraclass level is discussed in Brower.

Definition of infraclass in:

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