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a mostly Gondwanan distribution in a sentence
1. Caecilians have a mostly Gondwanan distribution, being found in tropical regions of Africa, Asia and Central and South America.
Some Words
- tropical regions
- The integumentary structure
- some typical characteristics
- terrestrial vertebrates
- highly cornified outer layers
- a moulting process
- the pituitary and thyroid glands
- Local thickenings
- The outside
- one piece
- the sloughed skin
- dermal scales
- the dermis
- the furrows
- The similarity
- the scales
- bony fish
- some frogs
- somewhat similar osteoderms
- bony deposits
- convergent evolution
- similar structures
- diverse vertebrate lineages
- Amphibian skin
- cutaneous respiration
- adult amphibians
- their thin and delicate skin
- mucous glands
- The secretions
- these help
- the skin moist
- granular glands
- distasteful or poisonous substances
- Some amphibian toxins
- little effect
- The main poison-producing glands
- the parotoids
- the neurotoxin bufotoxin
- the backs
- the upper surface