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
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).