Amphibian Diversity

Bio Unit 2

Lissamphibia

Modern amphibians (frogs, salamanders, caecilians)

Metamorphosis

The development transition from larval to adult body form

Papilla amphibiorum

Inner ear structure sensitive to low frequency sounds

Pedicellate teeth

Teeth with a crown and base separated by a layer of uncalcified dentine

Paedomorphosis

Larva becomes sexually mature without attaining the adult body form

Costal grooves

Vertical grooves along the sides of salamanders that help with moisture

Nasolabial groove

Groove between nostril and lip helping with chemoreception in salamanders

Neotenes

Individuals that remain in a larval state but reach sexual maturity

Intromittent organ

Organ used by males for internal fertilization

Parotid glands

Large glands behind eyes that produce toxins

Plethodontidae

Most diverse group of salamanders, lungless, respiration through skin

Hylidae

Tree frogs, mostly arboreal, has toe pads