Olfactores | |
---|---|
![]() | |
Example of Olfactores | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Subkingdom: | Eumetazoa |
Clade: | ParaHoxozoa |
Clade: | Bilateria |
Clade: | Nephrozoa |
Superphylum: | Deuterostomia |
Phylum: | Chordata |
Clade: | Olfactores Jefferies, 1991 |
Subphyla | |
Olfactores is a clade within the Chordata that comprises the Tunicata (Urochordata) and the Vertebrata (sometimes referred to as Craniata). Olfactores represent the overwhelming majority of the phylum Chordata, as the Cephalochordata are the only chordates not included in the clade. This clade is defined by a more advanced olfactory system which, in the immediate vertebrate generation, gave rise to nostrils.
A rudimentary neural crest is present in tunicates, implying its presence in the olfactores ancestor also, as vertebrates have a true neural crest.[3] For this reason, they are also known as Cristozoa.[clarification needed]
© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search