Author's note: these pages were written some years ago. I am not planning to update them. For a more current coverage, see the link to palaeos com Palaeos website (to which many links on these pages point to anyway. More info here

Order

Kingdom
Phylum
Class
Order
Family
Genus
Species
In the Linnean system (and taxonomic systems based on it), the Order is a taxonomic category between Class and Family.  An order is group of organisms, e.g. Lepidoptera, link to palaeos com Squamata, Primates, etc that although differing quite a bit among themslves still have a large degree of characteristics in common (e.g. all Lepidoptera (butterflies and moths) have minute scales on their wings, a soft-bodied herbivorous larval form (caterpllar), mouthparts in the adult specialised for feeding on nectar, etc).  As with all the groupings whether a group of organisms ranks as an order or not is a subjective decision, although usually based on the traditional status of that group in earlier literature.  There is also a tendency towards taxonomic inflation, especially among tetrapods but also certain groups of invertebrates, with sub- or infra-orders (and even families) being promoted to ordinal status.  Also, invertebrate orders tend to differ among themselves much more than vertebrate orders (e.g. an invertebrate order e.g. Coleoptera (beetles) might correspond in diversity to a suborder or cohort or infraclass of link to palaeos com Vertebrates).  Cladism tries to solve this arbitrariness by doing away with the Linnean system altogether.

 

Superorder
Grandorder
Order
Suborder
Infraorder
Parvorder
 
 

Page History

page uploaded 27 May 1999