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by
Ciro Santilli
(
@cirosantilli,
34
)
Marsupial
...
Synapsid
Synapsid subclade
Mammal
Mammal subclade
Theria
Theria subclade
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Updated
2024-10-08
Created
1970-01-01
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They split up from the rest of the
mammals
after the
monotremes
.
Every other mammal has a
placenta
.
This baby in pouch thing just feels like a pre-
placenta
stage.
Ancestors
(25)
Theria subclade
Theria
Mammal subclade
Mammal
Synapsid subclade
Synapsid
Amniote subclade
Amniote
Tetrapod subclade
Tetrapod
Fish subclade
Fish
Vertebrate
Chordate subclade
Chordate
Animal subclade
Animal
Eukarya subclade
Eukaryote
Species
Taxonomy
Biology
Natural science
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Theria
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