Class Amphibia

1
Class Agnatha
Class Chondrichthyes
Class Osteichthyes
Class Amphibia
tetrapods
Class Reptilia
Class Aves
Class Mammalia
2
Class Agnatha
Class Chondrichthyes
Class Osteichthyes
Ichthyology
Class Amphibia
Herpetology
Class Reptilia
Class Aves
Ornithology
Class Mammalia
Mammalogy
3
bone
Class Osteichthyes
fin rays in appendage
Class Amphibia
Lateral skeletal elements in appendage
bone
Class Reptilia
Lateral skeletal elements in appendage
amniotic eggs
scales
diapsid skull
anapsid skull
bone
Class Aves
Lateral skeletal elements in appendage
feathers
diapsid skull
amniotic eggs
bone
Class Mammalia
Lateral skeletal elements in appendage
bone
hair
mammary glands
synapsid skull
amniotic eggs
4
bone
Class Osteichthyes
fin rays in appendage
Lateral skeletal elements in appendage
Class Amphibia
Lateral skeletal elements in appendage
bone
Class Reptilia
Lateral skeletal elements in appendage
amniotic eggs
scales
diapsid skull
anapsid skull
bone
Class Aves
Lateral skeletal elements in appendage
feathers
diapsid skull
amniotic eggs
bone
scales
Class Mammalia
Lateral skeletal elements in appendage
bone
hair
mammary glands
synapsid skull
amniotic eggs
scales
5
A
B
C
6
Lissamphibia
Amniota
7
Synapsida
Anapsida
Diapsida
Amniota
8
Synapsida
Anapsida
Diapsida
Amniota
9
Anapsida
Synapsida
Diapsida
Amniota
10
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11
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12
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13
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14
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15
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16
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17
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18
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19
Class Aves