Nota de aplicación
Order of serpent-like amphibians, having a compact skull for burrowing with many compound bones, limbs or girdles, a persistent notochord, typically having naked skin (although some have scales), complete metamorphosis like frogs and toads, a compact skull, and lidless tiny eyes nearly hidden by the skin. Dates from Early Jurassic to present, with six extant families and about 170 living species.
Ubicación jerarquía
- faceta agentes
- .. organismo vivo (nombre jerárquico)
- .... organismo vivo (entidad)
- ...... Eucariota (dominio)
- ........ animal (reino)
- .......... Chordata (phylum)
- ............ vertebrado (filo)
- .............. anfibio (clase)
- ................ Anura (orden) [+]
- ................ Caudata (order)
- ................ Gymnophiona (order)
- ................ Adelospondyli (extinct order)
- ................ Aistopoda (extinct order)
- ................ Lepospondyli (extinct former order)
- ................ Microsauria (extinct order)
- ................ Nectridea (extinct order)