[kach22i]

The order Gymnophiona contains approximately 160...

The order Gymnophiona contains approximately 160 species. Commonly called caecilians, they are elongate, limbless, burrowing creatures found in tropical forests along the equator.

http://kids.sandiegozoo.org/animals/amphibians/caecilian


http://blogs.scientificamerican.com/tetrapod-zoology/2013/08/25/because-caecilians-are-important/

Excellent diagrams showing skull anatomy and jaw musculature of (from top to bottom) rhinatrematid, ichthyophiid, caeciliid and scolecomorphid caecilians. Caecilians are unique in that they have co-opted various throat muscles as jaw-closers. From Nussbaum (2000).

http://blogs.scientificamerican.com/tetrapod-zoology/2013/08/25/because-caecilians-are-important/

Aquatic Typhlonectes, foraging near the bottom of an aquarium. These caecilians are often sold in the pet trade as 'rubber eels' or 'black eels'. Photo by Neil Phillips.