Preferred term
568.2 Archaeornithes (øglefugler), Hesperornithiformes (tannfugler), Ichthyornithiformes (fiskefugler)
Broader concept
Broader conceptNarrower concepts
Narrower concepts.Identifier
- ocd00148103
Notation
Code that uniquely identifies a concept within a concept scheme.- 568.2
URI
http://dewey.info/class/568.2/e23/