Search results
Results from the WOW.Com Content Network
There is a tentacle about halfway between eye and nostril. The lower jaw has only one row of teeth. [4] Living specimens are very dark purple to purple-black above and creamy white below. [1] Based on external morphology, three groups of species can be recognized: [4] large caecilians with numerous secondary folds: D. mexicanus and D. oaxacae
Unlike earthworms, caecilians possess a prominent mouth, nostrils, and, uniquely amongst vertebrates, a pair of retractable tentacles, one on each side of the head, between the eye and nostril. The snout of the Sagalla caecilian is rounded, with short, globular tentacles, and a relatively large mouth, with two rows of teeth in each jaw.
Funcusvermis is an extinct genus of stem-caecilian from the Late Triassic of Arizona.It is based on a large sample of jaws and other skull and postcranial fragments, discovered in an approximately 220 million years old layer of rock in the Blue Mesa Member of the Chinle Formation at Petrified Forest National Park.
Like C. jenkinsi and modern caecilians, there is a second row of teeth on the coronoids that lie medial to the primary marginal row on the dentary, a feature originally proposed to link C. jenkinsi to this modern group [4] but subsequently disputed as such a feature occurs in some other stereospondyls.
Caecilians feed on small subterranean creatures such as earthworms. The body is cylindrical and often darkly coloured, and the skull is bullet-shaped and strongly built. Caecilian heads have several unique adaptations, including fused cranial and jaw bones, a two-part system of jaw muscles, and a chemosensory tentacle in front of the eye. The ...
Dermophis mexicanus, also known commonly as the Mexican burrowing caecilian or the Mexican caecilian, and locally as the tapalcua or tepelcua, is a species of limbless amphibian in the family Dermophiidae. The species is native to Mexico and Central America, where it burrows under leaf litter and plant debris.
Ymboirana was an extinct genus of caecilian described based on a fossil found in the Oligocene Tremembé Formation (Taubaté Basin), Brazil.The holotype and only known specimen comprises a partially preserved skeleton, including parts of the skull and vertebral column.
The features uniting the Lissamphibia were first noted by Ernst Haeckel, even though in Haeckel's work, Lissamphibia excluded the caecilians. [6] [11] Nevertheless, Haeckel considered the caecilians to be closely related to what he called Lissamphibia (gr. λισσός, smooth), which is now called Batrachia and includes frogs and salamanders.