Taxonomy details for Chordates (Phylum Chordata)

Relationship: Match

iNaturalist.ca World Register of Marine Species
Phylum Chordata (parent: Kingdom Animalia) Match Phylum Chordata (parent: Kingdom Animalia)
Created by loarie on February 08, 2019

Defines a Taxon Framework for Chordata sourced to World Register of Marine Species (WoRMS)

Downstream coverage: rank subspecies

Complete: true

Overlapping downstream Taxon Frameworks: 22
Attached Taxon Rank Downstream coverage rank Source
Cephalochordata Subphylum Subspecies World Register of Marine Species (WoRMS)
Tunicata Subphylum Subspecies World Register of Marine Species (WoRMS)
Reptilia Class Subspecies Reptile Database: 21 December 2019
Aves Class Subspecies Clements Checklist v2019
Sarcopterygii Class Subspecies Fishbase
Amphibia Class Species Amphibian Species of the World 6.0
Elasmobranchii Class Subspecies Fishbase
Holocephali Class Subspecies Fishbase
Myxini Class Subspecies Fishbase
Actinopterygii Class Subspecies Fishbase
Mammalia Class Species Mammal Diversity Database. 2019
Cephalaspidomorphi Class Subspecies Fishbase
Marsupialia Infraclass Species Mammal Diversity Database. 2019
Afrotheria Superorder Species Mammal Diversity Database. 2019
Xenarthra Superorder Species Mammal Diversity Database. 2019
Rodentia Order Species Mammal Diversity Database. 2019
Carnivora Order Species Mammal Diversity Database. 2019
Artiodactyla Order Species Mammal Diversity Database. 2019
Chiroptera Order Species Mammal Diversity Database. 2019
Eulipotyphla Order Species Mammal Diversity Database. 2019
Primates Order Species Mammal Diversity Database. 2019
Lagomorpha Order Species Mammal Diversity Database. 2019

Taxon Framework Relationships: 13

Deviations: 2

Taxon Curators:

Flagged covered taxa: 2
Flagged Taxon
Aves
Aves

Taxon Framework notes:

iNaturalist follows WoRMs for the Chordata. This phylum has 3 subphya:

  1. Cephalochordata
  2. Tunicata
  3. Vertebrata

The first 2 are marine only and quite small.

iNaturalist considers vertebrates to be Amphibians, Birds, Mammals, and Reptiles along with the 6 'fish' classes:
Actinopterygii (Ray-finned Fishes)
Cephalaspidomorphi (Lampreys)
Elasmobranchii (Elasmobranchs)
Holocephali (Chimaeras)
Myxini (Hagfishes)
Sarcopterygii (Lobe-finned Fishes)

While this framework is sourced to WoRMs, things are a bit of a mess:

1) WoRMs has Petromyzonti as distinct from Cephalaspidomorphi probably in error, these are synonyms.

2) Sarcopterygii traditionally referred to the Coelacanth (Coelacanthi) and the lungfish (Dipneusti). This is the circumscription that iNat is following. Then it was determined that the Tetrapods (Reptilia, Mammalia, Aves, Amphibia) were nested inside Sarcopterygii. WoRMs elevated Dipneusti and Coelacanthi to class presumably in a step towards resolving this. But they left Sarcopterygii as a sibling rather than an ancestor of these taxa. They also keep them all in the non-monophyletic Pisces (jawed fishes) which they have as sister to Tetrapoda.
iNat keeps the non-monophyletic traditional Sarcopterygii and has it grafted alongside the other jawed vertebrates directly to the subphlyum.
WoRM's Gnathostomata and Tetrapoda are monophlyetic groups and we should probably add them, but there will be a large indexing load so waiting for a good time..

Each of the Vertebrate classes have their own frameworks attached to them with other sources (e.g. Fishbase) which take precedence over WoRMs for their descendants