Nota de aplicación
Class of vertebrates representing numerous primitive, fish-like, jawless animals, such as lampreys, hagfishes, and some extinct groups. Some classifications list Agnatha as a superclass with lampreys and hagfishes as classes. Jawless fishes probably arose from ancient small, softbodied filter-feeding organisms.
Ubicación jerarquía
- faceta agentes
- .. organismo vivo (nombre jerárquico)
- .... organismo vivo (entidad)
- ...... Eucariota (dominio)
- ........ animal (reino)
- .......... Chordata (phylum)
- ............ vertebrado (filo)
- .............. Agnatha (class)
- .................. Hyperotreti (order) [+]
- .................. petromizontiforme (orden)
- .............. anfibio (clase) [+]
- .............. ave (clase) [+]
- .............. Chondrichthyes (class) [+]
- .............. pez
- .............. Holocephali (class)
- .............. mamífero (clase) [+]
- .............. Osteichthyes (class) [+]
- .............. Placodermi (extinct class)
- .............. Reptilia (clase) [+]