Cryptobranchoidea

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Cryptobranchoidea

amphibian suborder

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annotated classification

In Caudata: Annotated classification
Suborder CryptobranchoideaThe most primitive salamanders; external fertilization; angular bone separate from the prearticular bone in the lower jaw; 2 pairs of limbs; no external gills; aquatic, semiaquatic, and terrestrial.Family Hynobiidae (Asiatic salamanders)Generalized, medium-sized (to about 250 mm),
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fertilization

In Caudata: Life cycle and reproduction
…primitive species constituting the suborder Cryptobranchoidea, the egg is fertilized externally. The females deposit sacs or strings of eggs that may be grasped by the male, who then sheds milt (which contains the sperm) over them. Nothing is known of courtship in sirens, but they, too, may have external fertilization,…
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