Amphibians (Amphibia) and Products | Skulls Unlimited International, Inc. 1-800-659-SKULL

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Amphibia

Amphibians

Amphibians (class Amphibia), such as frogs, toads, salamanders, newts, and caecilians, are ectothermic (or cold-blooded) animals that metamorphose from a juvenile water-breathing form, to an adult air-breathing form. Though amphibians typically have four limbs, the Caecilians are notable for being limbless. Unlike other land animals (amniotes), amphibians lay eggs in water. Amphibians are superficially similar to reptiles.

Amphibians are ecological indicators, and in recent decades there has been a dramatic decline in amphibian populations around the globe. Many species are now threatened or extinct.

Amphibians evolved in the Devonian Period and were top predators in the Carboniferous and Permian Periods, but many lineages were wiped out during the Permian-Triassic extinction. One group, the metoposaurs, remained important predators during the Triassic, but as the world became drier during the Early Jurassic they died out, leaving a handful of relict temnospondyls like Koolasuchus and the modern orders of Lissamphibia.

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Salamander, Giant (Andrias davidianus)
Salamander, Giant Skull
WBC-122
Museum Quality Replica
$105.00
Frog, Brazilian Horned (Ceratophrys cornuta)
Frog, Brazilian Horned Skull
WTQ-187
Replica
$71.00
Frog, Goliath (Conraua goliath)
Frog, Goliath Skull
WBC-094
Museum Quality Replica
$95.00
Frog, Goliath (Conraua goliath)
Frog, Goliath Skeleton
WSC-094-A
Museum Quality Replica
$525.00
 
Marine Toad Partial Skeleton (Bufo  marinus)
Marine Toad Partial Skeleton
WOK-4353
Natural Bone
$25.00
One-of-a-Kind (?)
Giant Slippery Frog Skeleton  (Conraua robusta)
Giant Slippery Frog Skeleton
WOK-4249
Natural Bone
$499.00
One-of-a-Kind (?)
Bullfrog Skull (Rana  catesbeiana)
Bullfrog Skull
WOK-4090
Natural Bone
$225.00
One-of-a-Kind (?)
Specimen in Glycerin - Frog  (Rana  catesbeiana)
Specimen in Glycerin - Frog
WVGS-053
Natural Bone
$99.00
One-of-a-Kind (?)
 
Specimen in Glycerin - American Toad Tadpoles (Rana  catesbeiana)
Specimen in Glycerin - American Toad Tadpoles
WVGS-047
Natural Bone
$199.00
One-of-a-Kind (?)