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Modern caecilians are a clade, the order Gymnophiona / ˌdʒɪmnəˈfaɪənə / (or Apoda / ˈæpədə / ), one of the three living amphibian groups alongside Anura ( frogs) and Urodela ( salamanders ). Gymnophiona is a crown group, encompassing all modern caecilians and all descendants of their last common ancestor. Meer weergeven
Caecilians are a group of limbless, vermiform (worm-shaped) or serpentine (snake-shaped) amphibians with small or sometimes … Meer weergeven
Caecilians are native to wet, tropical regions of Southeast Asia, India, Bangladesh, Nepal and Sri Lanka, parts of East and Meer weergeven
Little is known of the evolutionary history of the caecilians, which have left a very sparse fossil record. The first fossil, a vertebra … Meer weergeven
As caecilians are a reclusive group, they are only featured in a few human myths, and are generally considered repulsive in traditional customs.
In the Meer weergevenCaecilians' anatomy is highly adapted for a burrowing lifestyle. In a couple of species belonging to the primitive genus Ichthyophis vestigial traces of limbs have been found, … Meer weergeven
The name caecilian derives from the Latin word caecus, meaning "blind", referring to the small or sometimes nonexistent eyes. The name … Meer weergeven
Reproduction
Caecilians are the only order of amphibians to use internal insemination exclusively (although most salamanders have internal fertilization and the tailed frog in the US uses a tail-like appendage for internal … Meer weergevenWikipedia-tekst onder CC-BY-SA-licensie 29.3: Amphibians - Biology LibreTexts
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WEB3 apr. 2024 · Gymnophiona, one of the three major extant orders of the class Amphibia. Its members are known as caecilians, a name derived from the Latin word caecus, meaning “sightless” or “blind.”. The majority of …
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WEBThey are classified in the order Gymnophiona or Apoda ("without legs"). Lacking limbs, caecilians resemble earthworms or snakes in appearance. Amphibians include all the tetrapods (four-legged vertebrates) that do …
WEBGymnophiona - Caecilian, Amphibian, Classification: Living caecilian families are distinguished from one another by the presence or absence of a tail, amount of fusion of cranial bones, degree of kineticism of the …
15.3: Clades of Amphibians - Biology LibreTexts
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