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Name origin: <amnion>, a pellicle that covers embryos of both <eggs> and also during <pregnancy>.

Includes:
* <sauropsida>: <reptiles> and <birds>, which really are reptiles
* <mammals>, or if you want to include a bunch of extinct non-reptile mammal ancestors, <synapsids>.

Does not include <amphibians>. If you include them, you have the <tetrapods>.


Amniote

{title2=Mammals that lay eggs}
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The weirdest <mammal> <clade>: they lay fucking <eggs>. Only 5 known species alive as of 2020.

Eggs are <basal (phylogenetics)>: they simply didn't evolve out of what other <reptiles> do. From which we conclude that <milk> came before <eggs> stopped.

So this is the most basal subclade of mammals.

Etymology: means "single hole" in <Greek (language)>, because like other <reptiles> it has a single hole for <shit>, <pee> and <fucking>: the <cloaca>.


Ciro Santilli @cirosantilli 34

 Incoming links: Egg