Which is the example of subclass Apoda?

Which is the example of subclass Apoda?

Apoda (Gymnophiona, caecilians; class Amphibia) An extant order of amphibians, now confined to the tropics and subtropics, that have become adapted to a burrowing life and look like large earthworms.

What is order Gymnophiona?

Gymnophiona /dʒɪmnəˈfaɪənə/ is the group of amphibians that includes the legless caecilians and all amphibians more closely related to them than to frogs or salamanders (the “stem-caecilians”).

What is the largest caecilian?

The largest caecilian is Caecilia thompsoni, which reaches 151.5 cm; the smallest is Grandisonia brevis at 11.2 cm but a female of Idiocranium russeli was gravid at 0.90 cm.

What are caecilians for kids?

Fun Facts About Caecilians for Kids

• Caecilians are gray, brown, yellow, orange or black.
• Caecilians can grow up to 5 feet long. Most are less than 6 inches long.
• These interesting animals are carnivores. They eat worms, beetle larvae, small snakes and lizards.
• Caecilians have moist skin like salamanders.

What does caecilians look like?

Caecilians (pronounced seh-SILL-yens) are tropical amphibians that look like large worms or slick snakes. They have no arms or legs, and sometimes it’s hard to tell which end is the head and which is the tail! Their shiny skin is ringed with skin folds called annuli.

What are the characteristics of Gymnophiona?

Caecilians have long, limbless, cylindrical bodies that abruptly end behind the cloaca or short tail. Annuli (primary grooves) in the skin encircle the body and form segments; in some taxonomic groups, secondary and tertiary grooves partially circumscribe the body.

Are frogs Gymnophiona?

Living amphibians are represented by three clades: Gymnophiona (caecilians), Caudata (salamanders), and Anura (frogs) (Table 1.1). All extant caecilians lack limbs, most are strongly annulated, and have wedge-shaped, heavily ossified heads and blunt tails reflecting a burrowing lifestyle of these tropical amphibians.

How are caecilians and Gymnophiona related to each other?

Gymnophiona is the group of amphibians that includes the legless caecilians and all amphibians more closely related to them than to frogs or salamanders (the “stem-caecilians”). The name derives from the Greek words γυμνος ( gymnos, naked) and οφις ( ophis, snake), as the caecilians were originally thought to be related to snakes.

Where does the Gymnophiona Order of amphibians live?

Written By: Gymnophiona, also called Apoda, 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 this group of limbless, wormlike amphibians live underground in humid tropical regions throughout the world.

Where did the name Gymnophiona come from in the Britannica?

Encyclopædia Britannica, Inc. See all videos for this article Gymnophiona, also called Apoda, 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.”

What kind of skin does a Gymnophiona have?

The body is cylindrical dark brown or bluish black in colour. The skin is slimy and bears grooves or ringlike markings. Little is known of the evolutionary history of the caecilian lineage, which has left a sparse fossil record.