Some large aquatic species, such as the hellbender (Cryptobranchus alleganiensis) and the mud puppy (Necturus maculosus), never fully metamorphose and retain larval characteristics as adults (see below heterochrony).
Several types of dissorophoids do not fully metamorphose, but retain features of juveniles such as gills and small body size in what is known as neoteny.
The abdominal muscles show increasing degrees of differentiation in the fully metamorphosed, more derived taxa.
In the alpine salamander (Salamandra atra) and Mertensiella, fully metamorphosed individuals are born.
In the viviparous frog Nectophrynoides, all development, including larval stages, occurs in the uteri and the young are born fully metamorphosed; i.e., except for size they resemble adults.
A fully metamorphosed long-toed salamander has four digits on the front limbs and five digits on the rear limbs.
On the other hand, we also recovered six fully metamorphosed frogs that survived to the end of the experiment.
To the best of our knowledge, the nasolabial groove only develops completely in fully metamorphosed individuals [[ 74- 78], RMB pers obs, D. B. Wake pers com].
Fully developed metamorphosing larvae are collected on corrugated PVC plates and/or frame fitted screens made of polyethylene or polypropylene.
However, they have been gradually metamorphosing into a fully-fledged "rawk" band.
Approximately 40% of planulae in the 20, 24 and 30°C treatments settled and metamorphosed into polyps (H = 5.57, p>0.05, around 50 fully developed polyps per flask).
