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Morganucodon: An Early Mammalian

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Morganucodon: An Early Mammalian

203 Million BCE (+/- 3 million)
Differentiated teeth and true mammalian jaw

Morganucodon is an example of a plant eater likely similar to our direct-line ancestors around this time. It is not a direct human ancestor but is among the early mammaliaforms, close to the lineage leading to true mammals. It likely had a varied diet, but its inclusion here highlights the transition towards more specialized mammalian diets from the broader reptilian ones.

Evolution: Amphibians > Amniotes > Synapsids > Mammalia
Class: Mammaliaforms or maybe Synapsida 
Time Period
: Late Triassic to Early Jurassic

Diet: Likely Herbivore


That Science Story, 

was first published on TST 2 years ago.

The flashcard inspired by it is this.

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Timelines, quotes, and FAQs function as research anchors—designed to be reused, cross-linked, and updated as better evidence emerges.
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