Mitochondrial evidence on the phylogenetic position of caecilians (Amphibia:
Gymnophiona).
We concluded that state 0 was the state possessed by the ancestor to salamanders, as this morphology is identical to that described by Wake (1970) for
Gymnophiona. The majority of anurans lack an extended pelvic region of the kidney; however, those that do (see Bhaduri and Basu, 1957) have an identical morphology to state 0.
Bolitoglossa peruviana (Boulenger, 1883) 200-800 Orden
Gymnophiona Familia Caeciliidae 521.
Generally they are grouped as Anura, those without tails (frogs and toads), caudata, those with tails (salamanders, newts, and sirens), and
gymnophiona, the caecilians, or the limbless amphibians.
Reproductive biology and phylogeny of
Gymnophiona (Caecilians)
Next, all three amphibian orders (Caudata,
Gymnophiona, Anura) are covered in 31 pages.
The development of the skull of Dermophis mexicanus (Amphibia:
Gymnophiona), with comments on skull kinesis and amphibian relationships.
The members of
Gymnophiona, also known as cecilians, are difficult to observe because they live underground and because they exhibit nocturnal habits; thus, these animals are rarely known (Gower & Wilkinson, 2005).
Se colectaron 318 individuos, pertenecientes a 27 especies, las cuales se agrupan en 19 generos, 12 familias y tres ordenes: Anura (85.2%), Caudata (11.1%) y
Gymnophiona (3.7%) (Tabla 1).